Best Winter Sleeping Bags

12 of the Best Winter Sleeping Bags

Whether your travels are taking you to Kilimanjaro or Mount Kenya, to Everest Base Camp or the Andes, a good winter sleeping bag is essential. Hiking at altitude is cold and after a strenuous day on the trail, getting a good night’s sleep is hard enough, without being cold as well!

We’ve checked out 12 winter sleeping bags for you to consider for your next mountain adventure:

Choosing Winter Sleeping Bags

Warmth Rating

Even during the summer, if you intend to sleep above 10,000ft you’ll need a winter sleeping bag. All multi-day hikes at altitude mean freezing cold nights. Additionally, the more fatigued you get, the colder you will feel.

We recommend a winter sleeping bag with a temperature rating of 0F (-15C) or 15F (-10C)

However, with a sleeping bag rated 15F (-10C) it is advisable to take a good sleeping bag liner, to keep you comfortable on freezing mountain nights.

Note that warmth ratings are not to be relied on exclusively. The EN ratings (European Norm) are often inaccurate – as with most things, you get what you pay for. That’s not to say that the most expensive winter sleeping bag is necessarily the warmest.

Whether you choose to buy a 15F or a 0F will depend on (a) your budget (b) your expectation of future usage (c) how cold or warm you tend to be at night.

If you are planning multiple treks at altitude, you may like to consider a 0F, but if it’s a one-off trip to Everest Base Camp or Kilimanjaro, then you could easily get away with a 15F.

Shape

Most modern winter sleeping bags are a “Mummy” shape – looking a little bit like a sarcophagus. This design traps the heat next to your body, minimizing heat loss from the bag so that you stay warmer through the night.

This shape also means the bag is less bulky for fitting into your duffel bag or rucksack without compromising on warmth.

Mummy-style sleeping bags have a hood that can be secured around your head and a neck collar that prevents heat loss from your head and neck area.

The narrower the hip/shoulder specifications, the more heat is retained in the sleeping bag. This can be at the expense of comfort, as you may not like the feeling of being restricted.

If you are a restless sleeper, opting for a slightly larger (therefore slightly less thermally efficient) bag may keep you more comfortable through the night.

Fill

Winter sleeping bags have either a down or synthetic filling.

Down-filled bags (either Duck or Goose down) are significantly more expensive, they hate getting wet and dry slowly. However, they have an extremely good warmth-to-weight ratio keeping you very warm on cold mountain nights.

Down also compresses very small and is super-light, minimizing the amount of weight and space taken up in your duffel bag.

Down bags are advantageous on the treks that don’t require camping (most Everest Base Camp treks and Kilimanjaro’s Marangu route) where you might get wet.

If you are going on an unsupported backpacking trip where space and weight is at a premium, then Down fill is superior to synthetic.

Goose down is superior to Duck down in terms of its compressibility and warmth-to-weight ratio.

For down sleeping bags, “fill weight” is the amount of loft – or volume – any given weight of down produces. So an ounce of 800 fill down will produce more loft (more trapped air – and more warmth) than an ounce of 600 fill down.

Synthetic-filled bags are bulkier as they doesn’t compress as much, and can be heavier. However they are cheaper. Synthetic bags are better for wet conditions, maintaining their thermal efficiency and drying quickly giving you the peace of mind that you’ll still be warm even if it does get wet.

Synthetic bags are often recommended for the treks that require camping, such as Kilimanjaro (except Marangu route), Mt Kenya, and the Annapurna circuits, as there is more risk of getting wet.

All that being said, I always use a down winter sleeping bag, even when camping! On the camping trips I just be very sure to keep it well stowed in a waterproof stuff-sack. And I avoid sleeping in leaky tents.

Getting the most out of your Sleeping Bag

Top tips for a good night’s sleep on the mountain:

Whether you are camping on Kilimanjaro or Mt Kenya, or sleeping in huts and lodges on your way to Everest Base Camp, here are our top tips for getting the most out of your winter sleeping bag:

  • Keep it dry – if it doesn’t come with a waterproof stuff sack, get one, or wrap it in large heavy-duty garbage bags.
  • Shake out the sleeping bag before you get into it. Having been compressed, you need to get the air back into the fill in order for the ‘loft’ to trap the heat in.
  • Use a sleeping bag liner. I wouldn’t go anywhere without my sleeping bag liner. It keeps your bag clean. Dirt and fine sand from the trail can get into the insulation of the sleeping bag and degrade it. Using a sleeping bag liner will reduce the amount of laundering that your sleeping bag will need, prolonging it’s life.
  •  Also, a decent sleeping bag liner can improve the temperature rating of your bag. If you are in any doubt about whether your sleeping bag will be warm enough, you might want to get hold of a liner to be sure.
  • Keep it clean: if you are not using a sleeping bag liner, then it’s best to have a set of clothes that you only wear at night, minimizes body oils, sweat and dirt accumulating in the bag.
  • At bedtime, fill a water bottle with warm water (make sure it’s watertight!) and stow this in the foot box to keep your toes nice and warm. You can also use chemical warmers in the same way. A good quality Nalgene bottle works well.
  • Before retiring, drink a hot drink to warm your core and walk around a little to get the blood flowing.
  • If you are camping, make sure the sleeping bag is placed away from the side of the tent. Sometimes condensation can form on the sides, wetting the sleeping bag.
  • Use the clothes you plan to wear for the next day’s hike (so long as they are dry) as a pillow, so that they are nice and warm for when you need to put them on.

So what’s the Best Winter Sleeping bag?

Contents:

We’ve broken it down to four sections, with three sleeping bags per section:

0F (-15C) Down Sleeping Bags

0F (-15C) Synthetic Sleeping Bags

15F (-10C) Down Sleeping Bags

15F (-10C) Synthetic Sleeping Bags

0F (-15C) Down Sleeping Bags

These are the warmest sleeping bags for their weight but they are the most expensive. You might want to choose one of these if you tend to feel the cold at night and are planning more than just a “one-off” expedition.

Thanks to their superior warmth-to-weight ratio, these are the best sleeping bags if you are planning an unsupported backpacking trek. For sleeping in Kilimanjaro’s crater (Crater Camp) I would highly recommend a 0F rated Down sleeping bag as it’s bone-chillingly cold next to the glacier!

Editor’s Choice: RAB Summit 800

Budget Buy: Kelty Cosmic Down

RAB Neutrino 800 or Neutrino 800 XL


Key features:

What we like:

  • Super-lightweight and packable, taking up less space/weight in your duffel bag or backpack
  • Moisture-repellent 800 European Goose down filling for a supremely warm night, even when camping in a damp cloud on Kilimanjaro!
  • Pertex Quantum fabrics are durable without being heavy and soft to the touch
  • Trapezoid baffle chamber design maintains the ‘loft’ of the down without increasing weight, reducing those annoying cold-spots
  • Waterproof dry-bag compression sack keeps the bag dry when being transported
  • Sleep limit -20C so you’ll be fine even on Aconcagua!
  • Internal collar and drawcord ensures that valuable heat will not be lost from your head and neck area.
  • Anti-snag ¾ length zipper
  • Internal zippered pocket for you to store small items
  • Two sizes: Regular and XL accommodating everyone
  • Weight 1220g regular, 1295g XL.
  • Fluorocarbon-free

What we don’t like:

  • Cost

Who is this for?

If you are looking for a premium-quality, ultra-lightweight winter sleeping bag that punches well over it’s weight in warmth, then this one’s for you. It comes at a premium price, but it’s durable and will see you through most of the major hikes at altitude.

Goose down is the has the highest warmth-to-weight ratio of all the sleeping bag fillers. After a tough day’s hiking, you should get a great night’s sleep!

Additionally, if you are planning a backpacking expedition without porters, you’ll not have to worry about bulk and weight in your rucksack.

If your trip to Kilimanjaro or Everest Base Camp is a one-off and you are unlikely to use it again, then perhaps you might consider something a little cheaper and less high-spec.

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Sizing:
This bag is a tapered mummy shape design.

Regular will fit:

Height: 185cm / 72.8 inches / 6ft1
Shoulder width: 70cm / 27.5 inches
Hip width: 52cm / 20.5 inches
Foot width: 41cm / 16 inches

XL will fit:
Height: 200cm / 78.8 inches / 6ft7
Shoulder width: 72cm / 28.3 inches
Hip width: 54cm / 21.3 inches
Foot width: 42cm / 16.5 inches

RAB Summit 800 or Summit 800 XL

winter sleeping bags
Key features:

What we like:

  • Very lightweight and packable, taking very little space/weight in your duffel bag or backpack
  • Premium moisture-repellent 800-fill Duck down keeping you warm and dry on the coldest of nights.
  • Durable, water-resistant Pertex Endurance outer fabric
  • Lightweight nylon lining fabric so that the weight is kept down and warmth retained
  • Trapezoid baffle chamber design ensuring there are no cold-spots, keeping you warm throughout the night
  • Compression stuff sack so that it takes up little space in your duffel bag
  • Internal collar and drawcord ensures that valuable heat will not be lost from your head and neck area.
  • Anti-snag ¾ length zipper
  • Internal zippered pocket for storing small items
  • Two sizes: Regular and XL accommodating everyone
  • Weight 1300g regular, 1385g XL.
  • Fluorocarbon-free

What we don’t like:

  • Cost: whilst it’s cheaper than the goose-down, it’s still a pricey sleeping bag
  • No waterproof stuff sack

Who is this for?

RAB manufacture excellent high-end winter sleeping bags for expeditions. This is a premium-quality, durable sleeping bag that will see you through many high-altitude treks.

It’s light enough for your backpacking needs if you are planning a trip without porters.

Made with Duck down and hand-filled, this is a high-quality sleeping bag that will keep you warm and comfortable after a hard day on the trail.

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Sizing:
This bag is a mummy design with an angled footbox keeping your feet comfortable

Regular will fit:
Height: 185cm / 72.8 inches / 6ft1
Shoulder width: 70cm / 27.5 inches
Hip width: 54cm / 21.3 inches
Foot width: 42cm / 16.5 inches
XL will fit:
Height: 200cm / 78.8 inches / 6ft7
Shoulder width: 72cm / 28.3 inches
Hip width: 60cm / 23.5 inches
Foot width: 46cm / 18 inches

Kelty Cosmic Down 0

winter sleeping bag
Key features:

What we like:

  • Cost – excellent 0 degree down sleeping bag for an affordable price
  • 600-fill moisture-repellent DriDown keeps you very warm and cosy
  • Durable, rip-stop polyester outer for rugged mountain use
  • Polyester taffeta lining for extra comfort/li>
  • Dual sliding, locking zip (with anti-snag)
  • Thermal comfort hood and anti-draft collar preventing heat loss from head/neck
  • Quilt-through construction keeps the down in place, reducing cold spots
  • Comfortable, roomy footbox for your hot water bottle
  • Comes in regular and long lengths
  • Weight regular 1616g, Long 1729g

What we don’t like:

  • No internal pocket
  • Stuff sack difficult and not waterproof
  • Zip can get stuck

Who is this for?

The Kelty Cosmic Down 0 is an excellent winter sleeping bag for it’s price point. If you are looking for the superior warmth and packability of Down without the hefty price tag, then you should give this one your serious consideration.

It’s a good all round sleeping bag that will keep you warm and comfortable. Available in a regular and a long length for maximum comfort whatever your height.

Being an entry-level sleeping bag, it is heavier than the more premium down sleeping bags but for the price, it’s a great buy.

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Sizing:

Regular will fit:
Height: 183cm / 72 inches / 6ft
XL will fit:
Height: 200cm / 78.8 inches / 6ft7

 

0F (15C) Synthetic Sleeping Bags

Synthetic sleeping bags have come a long way since the old bulky, heavy rectangular offerings. If you have an allergy to Down, or simply don’t want to spend the money, then check out these synthetic winter sleeping bags.

Synthetic sleeping bags generally pack a bit bigger than their down counterparts, and weigh a bit more. This is of little concern unless you are planning an unsupported multi-day backpacking trip.

Another advantage of synthetic over down is that it dries a lot quicker and is much more forgiving in wet conditions.

Editor’s Choice: HyperLamina Torch

Budget Buy: Mountain Hardwear Bozeman

Mountain Hardwear HyperLamina Torch 0

best winter sleeping bag
Key Features:

What we like:

  • 200g Thermal-Q insulation which provides a great ‘loft’ and warmth
  • Wind-resistant outer shell which is lightweight and soft.
  • Welded “Lamina” construction eliminates cold spots from stitching
  • Tailored hood blocks drafts and seals in the heat
  • Comfortable footbox with extra insulation so that your feet are always warm
  • Snug fit maximises the efficiency of the insulation keeping you warm
  • Short, central zipper (with baffle) prevents heat loss from the zip area and is easier for side-sleepers
  • Very lightweight – excellent warmth-to-weight ratio
  • Compression stuff-sack so that it takes up less room in your duffel bag
  • Comes in Regular and Long lengths
  • Weight regular 1470g Long: 1590g

What we don’t like:

  • Stuff sack is not waterproof

Who is this for?

The Mountain Hardwear Hyperlamina Torch is a top-class, premium-quality synthetic sleeping bag. It is very lightweight, barely weighing more than the heavier down bags.

This bag is suitable for both supported treks and unsupported backpacking in rugged, cold environments. Quick-drying with a windproof outer, this bag is versatile, durable and will withstand most mountain conditions.

If condensation in your tent makes it damp, it will dry in no time and continue to keep you warm.

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Sizing:

Regular:
Inside Length: 78 in / 198 cm
Shoulder Girth: 63 in / 160 cm
Hip Girth: 58 in / 147 cm
Foot Girth: 39 in / 99 cm
Long:
Inside Length: 84 in / 213 cm
Shoulder Girth: 66 in / 168 cm
Hip Girth: 64 in / 163 cm
Foot Girth: 41 in / 104 cm

 

Mountain Hardwear Bozeman Torch 0


Key Features:

What we like:

  • A roomy “comfort mummy shape” which is great if you don’t like to feel restricted
  • Cost
  • Offset quilt construction holds the insulation in place to eliminate cold spots
  • Double slider zipper with draft tube stops cold air coming in
  • Adjustable draw-cords so that you can vary the head and chest closure.
  • The hood is well designed to prevent heat escaping keeping your neck and  head warm
  • Durable 75 denier outer casing
  • Fleece-lined stuff sack that you can use as a pillow
  • Two sizes: regular and long (long is also wider in the shoulders)
  • Weight Regular 1760g, Long 2000g

What we don’t like

  • Zip tends to stick
  • The roomy design whilst comfortable, can compromise warmth if you are small-framed
  • No internal pocket
  • No waterproof stuff sack

Who is this for?

Mountain Hardwear are an established company and their equipment is high-quality. If you are looking for a great value, lightweight synthetic sleeping bag, this one is a worthy contender.

The more “roomy” shape of this bag maybe more comfortable if you tend to move around a lot in the night or are a side-sleeper.

This bag is also suitable if you are a larger-framed person and you tend to feel restricted in some of the smaller sleeping bags.

The overall look and feel of this bag is durable, warm and functional. If you tend to be a cold sleeper you may like to take along a good sleeping bag liner, just to be sure.

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Sizing

Regular:
Inside Length Regular: 78 in / 198 cm
Hip Girth Regular: 59 in / 150 cm
Foot Girth Regular: 41 in / 104 cm
Shoulder Girth Regular: 63 in / 160 cm
Long:
Inside Length: 84 in / 213 cm
Hip Girth: 66 in / 168 cm
Foot Girth: 43 in / 109 cm
Shoulder Girth: 71 in / 180 cm

The North Face Aleutian

best budget winter sleeping bags
Key Features

What we like:

  • Price
  • 2-layer Heatseeker Eco insulation with off-set quilting minimizes cold spots. Vaulted footbox giving you room to move without compromising warmth
  • Insulated hood with anti-draft collar and adjustable drawcord minimizes heat-loss from your head and neck
  • Comfortable fit which gives you room to move whilst keeping you warm
  • Good warmth-to-weight ratio
  • Inner pocket for keeping your batteries or electronics close by
  • Water-resistant polyester shell keeps you dry in damp conditions
  • Very soft polyester taffeta inner for a great night’s sleep
  • Full length draft tube prevents heat loss through the zipper
  • Eco-friendly insulation made from 30% post-consumer recycled material
  • Available in regular and long lengths
  • Weight Regular: 2619g, Long: 2919g (note: this is heavier than the previous bags but a very good weight for a bag at this price point)

What we don’t like

  • No compression sack
  • A bit bulky and heavy if being used for backpacking or unsupported trips

Who is it for?

The North Face Aleutian 0 is a great winter sleeping bag. It’s versatile, comfortable and will keep you warm and dry on the trail.

If you are wanting to purchase a synthetic bag without the premium price tag but with the warmth and quality that you need this one will do it.

That it’s a little bit bigger than the super-lightweight bags should be fine for any supported trek, it packs down small enough not to take up too much room in your duffel.

For your Kilimanjaro, Mt Kenya, Everest Base Camp or Machu Picchu needs, this bag is a good choice. North Face is consistent in their quality and this durable bag should see you through plenty of adventure travels.

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Sizing:

Regular:
Height: 183cm / 72 inches / 6ft
Shoulder circ: 160cm / 63 inches
Long:
Height: 198cm / 78 inches / 6ft6
Shoulder circ: 163cm / 64 inches

Note: hip and foot measurements are not available as it is a “relaxed” fit.

15F (-10C) Down Sleeping Bags

It’s perfectly possible to have a comfortable night’s sleep with a good 15F rated sleeping bag – after all, it’s rated to well below freezing point!

Depending on where you are going, if your trek has you sleeping in lodges (Everest Base Camp) or huts (Marangu Route, Kilimanjaro) then you might not necessarily need the 0F rated bag. This is entirely a personal choice.

If you tend to sleep “cold” at home, when you are not exhausted from 7 hours on the trail then I would suggest you opt for the warmer bag, rated 0F.

If you do decide to take the 15F rated sleeping bag, then I highly recommend a good sleeping bag liner for the higher elevations, where the nights are bitterly cold and the altitude is affecting you.

When choosing whether to take a 15F bag, do bear in mind that altitude and exertion can both conspire to make you much colder than you would be normally.

Note: if you plan to camp at Crater Camp, Kilimanjaro – I highly recommend a 0F rated bag.

Editor’s Choice: RAB Ascent 700

Budget Buy: Outdoor Vitals 15F

RAB Ascent 700

winter sleeping bag everest base camp
Key features:

What we like:

  • Lightweight and packable, taking up less space/weight in your duffel bag or backpack
  • Moisture-repellent, quick-drying 650 fill power European Duck down filling keeping you warm through the night, maintaining insulation even if you are in damp conditions
  • Soft to the touch and durable Pertex Microlight fabrics
  • Trapezoid baffle design ensures a stable structure of down in the bag, improving the ‘loft’ to minimize cold spots
  • Internal collar and drawcord ensures that valuable heat will not be lost from your head and neck area.
  • Anti-snag ¾ length zipper
  • Internal zippered pocket for storing your small items
  • Rectangular shape allowing you more comfort to move around, and accommodating your different sleeping positions
  • Two sizes: Regular and XL
  • Weight 1290 regular, 1355 XL.
  • Fluorocarbon-free

What we don’t like:

  • Cost

As usual, RAB knocks it out of the park with the quality of workmanship that goes into their products. This mid-weight down sleeping bag is a great choice for a 15 degree bag.

Light enough for unsupported treks, this bag packs down very small. Coupling this bag with a good sleeping bag liner would likely improve it’s rating to nearer 0F.

The RAB Ascent 700 is a popular bag for Kilimanjaro, at a great price point for the quality. More expensive than a synthetic bag or other, more entry-level down bags but you’ll notice the different as the mercury starts to fall.

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Sizing:

Regular fits:
Height: 185cm / 72.8 inches / 6ft1
Shoulder width: 75cm / 29.5 inches
Hip width: 65cm / 25.5 inches
Foot width: 50cm / 19.5 inches
XL fits:
Height: 200cm / 78.8 inches / 6ft7
Shoulder width: 75cm / 29.5 inches
Hip width: 65cm / 25.5 inches
Foot width: 50cm / 19.5 inches

 

Mountain Hardwear Ratio

what sleeping bag for altitude

Key Features

What we like:

  • 650-fill Down has an advanced “Q.Shield” treatment repelling moisture and maintaining the loft even in damp conditions meaning you don’t freeze when there is a bit of condensation
  • Lightweight water-resistant outer shell which is durable and soft
  • “Thermo Trap” baffle design keeps the down in small compartments maintaining it’s loft and minimizing cold spots around your body
  • Clever face gasket blocks drafts and seals in the heat around your head
  • Comfort fit so that you can sleep in different positions
  • ¾ length anti-snag zipper
  • Very lightweight – excellent warmth-to-weight ratio
  • Compression stuff-sack so that it takes up less room in your duffel bag
  • Comes in Regular and Long lengths
  • Weight regular 1140g Long: 1190g

What we don’t like:

  • No waterproof stuff sack
  • Zipper can get stuck

Who this is for:

This is a good quality, rugged down sleeping bag manufactured from good quality fabric that will keep you warm when the temperature drops.

The treated down does a good job of keeping it’s loft and insulation even in slightly damp conditions. It packs down small and light, and will not take up too much room in your rucksack or duffel bag.

It’s ideal for unsupported as well as supported treks. The Mountain Hardwear Ratio is a solid sleeping bag for the price point.

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Sizing:

Regular will fit:
Inside Length: 78 in / 198 cm
Hip Girth: 58 in / 147 cm
Foot Girth: 38 in / 97 cm
Shoulder Girth: 62 in / 157 cm
Long:
Inside Length: 84 in / 213 cm
Hip Girth: 60 in / 152 cm
Foot Girth: 40 in / 102 cm
Shoulder Girth: 64 in / 163 cm

Outdoor Vitals 15F

sleeping bags for everest base camp
Key Features:

What we like:

  • Cost
  • Lightweight 500-fill down which has a good warmth-to-weight ratio great for backpacking
  • Drawstrings so that you can adjust the hood keeping your head and neck warm
  • Baffles around neck keeping the heat in
  • Inside pocket for keeping small items close by
  • Reinforced material around the zipper keeping drafts out
  • Nylon moisture-repellent shell keeps damp away from the down filling
  • Soft and comfortable polyester lining
  • Compresses very small to take up very little room in your duffel or backpack
  • Mummy-shape design
  • Weight 1678g

What we don’t like:

  • Down is not treated to make it moisture repellent
  • Compression sack is not waterproof
  • Only comes in one size
  • Down can tend to migrate, leaving cold spots

Who is this for?

Bearing in mind the price point. This bag is a budget down sleeping bag that performs well. The down is not treated so keeping it dry is very important, although the outer shell material is water-resistant.

It’s not a premium bag with premium features, but if you are budget-conscious then this could be the bag for you. I would recommend taking a sleeping bag liner to improve it’s warmth.

The bag compresses very small and is lightweight. It has a rugged and durable feel, with a good zipper. For the price, this is a great sleeping bag.

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Sizing:

Exterior Dimensions: 80 inches / 203 cm
Interior Dimensions: Length: 75inches / 190cm  / 6ft3
Width: 27 inches / 68.5cm  / 2ft3

 

15F (-10C) Synthetic Sleeping Bags

Slightly heavier and bulkier than their down counterparts, synthetic sleeping bags are an excellent choice for those allergic to down or for travels in wet conditions.

Synthetic sleeping bags perform much better than down when they get wet and are less expensive. For supported treks, when space and weight is not crucial, then a synthetic sleeping bag is an excellent choice.

Editor’s Choice: Lamina Z Torch

Budget Buy: Coleman North Rim

Lamina Z Torch

camping sleeping bags
Key Features:

What we like:

  • Cost
  • Thermal Q 200g insulation compresses into a small space taking up little room
  • Lamina construction seals the insulation into the bag without stitching prevents the heat from escaping through the stitched areas eliminating cold spots
  • Extra insulation in the core and foot area keeping you warmer
  • Comfort mummy design allows you to move around without compromising thermal efficiency
  • Soft polyester lining, wicks away moisture from your body
  • Moisture-repellent, durable “ripstop” nylon shell keeps the bag dry
  • Zip pocket for keeping small items close to you
  • Footbox allows you to keep a natural position of your feet without feeling restricted
  • Tailored hood with a face gasket so that you lose less heat from your head and neck
  • Regular and long length to accommodate everyone
  • Compression stuff sack to pack it down very small
  • Weight 1790g

What we don’t like:

  • Stuff sack is not waterproof
  • Zipper can tend to get stuck

Who is this for?

The Lamina Z Torch is a lightweight, compressible synthetic sleeping bag that keeps you very warm in winter conditions.

Being synthetic means it will dry quickly if it gets wet, the Lamina design keeps the insulation well ‘lofted’ providing superior warmth at a good price point.

The interior is soft and whilst there is room to move around, you will be toasty warm on winter nights. Without the extra expense of a down sleeping bag, this one will perform well in damp conditions.

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Sizing:

Regular fits:
Inside Length: 78 in / 198 cm
Hip Girth: 59 in / 150 cm
Foot Girth: 41 in / 104 cm
Shoulder Girth: 63 in / 160 cm
Long fits:
Inside Length: 84 in / 213 cm
Hip Girth: 64 in / 163 cm
Foot Girth: 43 in / 109 cm
Shoulder Girth: 65 in / 165 cm

Marmot Trestles 15F


Key Features:

What we like:

  • Cost
  • SpriaFil high-loft insulation which is constructed in a wave design to keep you warm and eliminate cold spots
  • Insulated hood and collar with drawcords so that you don’t lose heat from your head and neck
  • Footbox that allows a comfortable, natural foot position so that you don’t feel restricted
  • Regular and Long sizing
  • “Long” fit is also extra-wide accommodating folk with larger shoulders or those of us who like a slightly larger sleeping bag
  • Anti-snag zipper with a draft tube to prevent heat escaping through the zipper
  • Keeps warm even in wet conditions
  • Internal pocket so that you can keep small items close to you
  • Comfortable polyester taffeta lining for extra comfort and durability
  • Weight 1765g

What we don’t like:

  • Warmth – a sleeping bag liner is recommended for high elevations
  • Stuff sack not waterproof and not a true “compression” sack
  • Zipper seems to be a bit lightweight and can break

Who is it for?

This Marmot Trestles 15F sleeping bag is an excellent choice for the price point. A good all-purpose 2-season sleeping bag that will keep you warm on numerous treks.

Coupled with a good thermal sleeping bag liner this bag is super-warm. For very high elevations or if you tend to sleep cold, then you might find that this bag isn’t as warm as the more premium-priced synthetic bags.

Marmot makes good quality at a good price. The bag compresses down into a small space (although we don’t like the stuff sack it comes with) and is not too heavy, even if you are doing an unsupported hike.

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Sizing:

Regular will fit:
Height: 85 inches / 216 cm / 6ft
Shoulder: 62 inches / 167.5cm
Hip: 58 inches / 147cm
Foot: 40 inches / 101cm
Long/Extra wide will fit:
Height: 91 inches / 231cm / 6ft6
Shoulder: 70 inches / 177cm
Hip: 66 inches / 167cm
Foot: 44 inches / 112cm

Coleman North Rim

bulky warm sleeping bag
The reason I am mentioning this sleeping bag here is if you are on a seriously low budget, and are only going to use the bag once or twice. The Coleman North Rim is a budget synthetic sleeping bag that does not pack down well and is heavy.

However, for a supported one-off trek it’s worth considering if you are concerned about the cost of better sleeping bags. I have seen this sleeping bag on Kilimanjaro and on an Everest Base Camp trek.

It would not be suitable for unsupported backpacking as it’s simply too heavy and bulky. For the price, you are getting a warm sleeping bag, but don’t expect the zippers to last or for it to be very durable.

I would recommend this only if you are on a tight budget and do not wish to rent a sleeping bag from a tour operator.

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Conclusion

For the ultimate in high-altitude comfort, the RAB Summit 800 is well worth the investment. The down will keep you warm and cosy on the bitterly cold mountain nights. I rate this one higher than the RAB Neutrino mostly based on the difference in pricing. The RAB Neutrino would be my go-to sleeping bag for unsupported treks where I’m carrying it myself!

Modern synthetic winter sleeping bags are a great choice particularly if you are concerned about damp conditions. They are cheaper as well! The HyperLamina Torch is an excellent choice for high altitude adventures where comfort and warmth is essential.

Our budget choices perform well. But they lack the premium features of the more expensive brands.

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