Updated on October 2, 2020

A good sleeping bag is essential to ensure that you get your well-deserved sleep during your adventures – whether it’s a trip through South America, a trek in the Himalayas or a bike ride along the Balkan coast. The best mummy sleeping bags offer maximum protection from the cold while occupying the minimum amount of space when packed down.

Today, brands have developed new technologies to create extremely light and compact products, offering great comfort even at the lower temperatures. We have selected the five best mummy sleeping bags for every season, so you can go hiking anywhere without worrying about nighttime comfort.

For more of our top backpacking gear recommendations, check out the Best Backpacking Sleeping Bags.


Quick Answer - The Best Mummy Sleeping Bags

  1. Marmot Col
  2. NEMO Sonic Down
  3. The North Face Inferno
  4. Big Agnes Flume UL
  5. Big Agnes Skeeter SL


Comparison Table - Best Mummy Sleeping Bag

PictureNameTemperature RatingWeightPacked SizePriceRating
Marmot Col-20 Degrees (F)4 lbs. 9 oz.19.9 liters$$$4.8
NEMO Sonic Down-20 Degrees (F)2 lbs. 4 oz.12.47 liters$$$5.0
The North Face Inferno-20 Degrees (F)3 lbs. 9 oz.10 liters$$$4.8
Big Agnes Flume UL30 Degrees (F)1 lbs. 8 oz.3.11 liters$$4.7
Big Agnes Skeeter SL20 Degrees (F)2 lbs. 7 oz.5.05 liters$$4.5
PictureNameTemperature RatingWeightPacked SizePriceRating
Want to learn more about a technical term? Check out our Features Explained section below.

Need buying advice? Take a look at these Things to Consider.

Reviews - The Best Mummy Sleeping Bags for Backpacking

Marmot Col

  • Fill: 800-fill-power goose down
  • Insulation: Down
  • Weight: 4 lbs. 9 oz.
  • Packed Size: 19.9 liters
  • Temperature Rating: -20 Degrees (F)
  • Shell: Nylon
  • Zipper Location: Left
  • Hidden Pocket For Stashing Nighttime Essentials
  • Nautilus 6-baffle Hood For Superior Warmth
  • Waterproof Breathable Fabric For Increased Weather Resistance And Durability


If you crave the adventure of climbing to the peak of a mountain, but worry about your sleeping choices once you’re on top of the world, look no further than the Marmot Col sleeping bag. With a waterproof shell and soft goose down inners, you’ll stay dry and warm in temperature drops up to -20°F no matter how high up in the treetops you are. 

This Marmot sleeping bag is equipped with cross baffle construction, meaning that the material keeping you warm won’t be able to shift and leave you with any cold spots. Being a mummy sleeping bag means you’re able to be totally secured and warm all over, meaning you won’t end up with any fingers or toes dropping off because they’ve been sticking out all night. This sleeping bag even holds a hidden pocket, allowing you to stash your nighttime necessities within it.

NEMO Sonic Down

  • Fill: 800-fill-power Hydrophobic Down
  • Insulation: Down
  • Weight: 2 lbs. 4 oz.
  • Packed Size: 12.47 liters
  • Temperature Rating: -20 Degrees (F)
  • Shell: 20-denier Ripstop Nylon
  • Zipper Location: Left
  • Draft Tubes Protect Against Cold Air
  • Stretch Construction At The Knees Allows Side Sleeping
  • Waterproof/breathable Footbox Designed For Foot Comfort


There is nothing worse than laying down for some much-needed rest, only to find yourself feeling extremely confined and claustrophobic within the walls of your sleeping bag. Many mummy shaped sleeping bags do not allow much room for movement, nor do they give you the ability to get properly comfortable. 

The Nemo Sonic Down -20 sleeping bag, however, gives you just that little bit of luxury you deserve. The fabric around where your knees sit is constructed to be stretchy, allowing you to move around and even sleep on your side if that is more comfortable for you. Unlike some bags that use goose feathers as lining, this sleeping bag has a Responsible Down Standard certification which ensures that the down lining used has been humanely sourced and treated. This bag is also water-resistant, ensuring that you don’t wake up soggy from a night spent in the elements.

The North Face Inferno

  • Fill: 800-fill-power ProDown
  • Insulation: Down
  • Weight: 3 lbs. 9 oz.
  • Packed Size: 10 liters
  • Temperature Rating: -20 Degrees (F)
  • Shell: Synthetic
  • Zipper Location: Front
  • Full Draft Collar And Integrated Draft Overlap To Prevent Heat Loss
  • Central Zipper For Easier Access
  • Compression Sack And Storage Sack Included


One of the worst things you can experience when you’re stuck sleeping on a mountain top is being left with a soggy sleeping bag due to a bit of unpleasant weather. The North Face Inferno -20 sleeping bag is equipped with a hydrophobic finish, meaning that water literally runs off the surface when it comes in contact with it, allowing you to stay warm and dry no matter what conditions you’re faced with. 

The hood cord allows you to fully synch the bag closed around your head, ensuring that the warmth is sealed inside. For further waterproof abilities, the fabric on the hood and the back of the bag is water-resistant, meaning that even if you’re left sleeping on a wet surface, it won’t impact insulating properties of the sleeping bag.

Big Agnes Flume UL

  • Fill: 850-fill-power DownTek Water-repellent Down
  • Insulation: Down
  • Weight: 1 lbs. 8 oz.
  • Packed Size: 3.11 liters
  • Temperature Rating: 30 Degrees (F)
  • Shell: Ripstop Nylon
  • Zipper Location: Left
  • Compact Size When Packed
  • Anti-snag Draft Tube Prevents Heat Loss Along The Zipper
  • Ergonomic Foot-box Construction Provides Loft And Warmth


Sometimes you have to be really concise in your packing, as you may not be able to carry a lot on your person when backpacking through different areas of the world. When you’re concerned about how much space you’ve got in your pack, but still want to give yourself the best sleeping experience, look no further than the Big Agnes Flume UL 30 sleeping bag. 

This bag is lightweight and extremely easy to fold down into a small size for your pack. Being so easily portable does not mean that this bag skimps on features, as it is water repellant and has thermal fabrics that trap in and distribute heat with ease. The zippers are very minimal, helping to reduce the weight of the bag and also ensuring that you aren’t left with any cold spots.

Big Agnes Skeeter SL

  • Fill: 650-fill DownTek down
  • Insulation: Down
  • Weight: 2 lbs. 7 oz.
  • Packed Size: 5.05 liters
  • Temperature Rating: 20 Degrees (F)
  • Shell: Ripstop Nylon
  • Zipper Location: Left
  • Pad Sleeve Secures The Bag To The Sleeping Pad So You Don't Roll Off At Night
  • Contoured Hood Baffles Cradle Your Head For A Comfortable Fit
  • Mesh Storage Sack And Nylon Stuff Sack Included


Worried about waking up soaking wet and freezing due to an unsatisfactory sleeping bag experience? Worry no more when you pick up a Big Agnes Skeeter SL 20 sleeping bag! The ‘DownTek’ insulation used in this bag absorbs 30% less water and is able to dry 60% faster than untreated down linings, ensuring that you stay warm and dry even if you’re faced with some unsavory weather conditions. 

This bag also includes a pad sleeve, ensuring that you aren’t left rolling off the pad in the middle of the night and therefore lose your chance at a comfortable night’s sleep. Although the outer shell fabric is super light and soft, it has high tear strength which ensures you won’t end up with a torn bag even when you’re trekking it through harsh terrain.





Summer sleeping bags have a rating of 37°F and up. They are often light in weight because they provide less insulation and are highly packable. These are usually the more basic models, meant to protect you from the wind, but not ideal in very cold environments.

Three-season sleeping bags are best suited for traveling in spring and autumn but can also be used in summer, especially if you plan to pitch your tent in the high mountains where nights can be freezing. These models have more functionality than the summer ones: they often have hoods and other features to fight the coldest temperatures. The rating of these multipurpose bags is usually between 20°F and 32°F.

Sleeping bags with a rating below 20°F are meant to keep you warm in any environment, even in the snow. They have all the characteristics of the three-season sleeping bags, with an added layer of insulation to ensure greater protection. These bags are normally bulkier and heavier, but essential if you plan to sleep in environments where temperatures drop heavily during the night.



Sleeping bags made of synthetic materials do not absorb water and offer excellent protection from soil moisture or light rainfall. These types of sleeping bags are relatively cheap, but they can be bulkier and heavier than down sleeping bags.

Down insulation made from duck or goose feathers is the lighter in terms of weight. Down bags can be compressed to a smaller size than synthetic, and they offer the highest protection against the cold. Down sleeping bags are generally more expensive than their synthetic counterparts and do not offer insulation when wet.



Any hiker knows how important it is to keep the pressure on their shoulders at a minimum, and therefore it is important to consider the weight of a sleeping bag before buying. Ultra-lightweight sleeping bags are best suited for backpacking, however, the reduced weight and bulk usually come at a high price. Summer sleeping bags are lighter than three-season and winter bags as they contain less insulating material, but consider the temperatures you’ll be sleeping at before looking at the weight you’ll be carrying.



When shopping for a sleeping bag, make sure you check how much space it will occupy in your backpack. Just because a sleeping bag is lightweight doesn’t necessarily mean it is also highly compressible. The volume of a compressed sleeping bag is measured in liters and you should aim at a maximum of 3 liters if your priority is reducing bulk.





The part of the sleeping bag running along with the zippers that is filled with insulating material to reduce the risk of cold air entering.


A water-repellent material.


The soft plumage that ducks and geese hide under their feathers, used as the insulating material in sleeping bags to protect against heat loss.


Polyester fibers employed as the insulating material to prevent heat loss. A cheaper alternative to down.


A sleeping bag’s outer layer, usually made of water-repellent nylon.


Zippers designed so that they don’t catch the sleeping bag’s fabric when pulled.


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