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Simond Makalu I Light Sleeping Bag

Sale price: $170.00 Regular price: $249.00

The lightest highly compressible sleeping bag in the SIMOND range, easy to transport and use with its mummy-shaped bag, hood with good coverage, and 3D assembly to prevent thermal bridges

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Sale price: $170.00 Regular price: $249.00

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Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

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Model: 8495188

Product Videos

Product Features

A photo of the Simond Makalu I Light Sleeping Bag in use

Simond Makalu I Light Sleeping Bag | mountaineers or hikers looking for a lightweight and warm down sleeping bag for temperatures close to 23°F

The lightest highly compressible sleeping bag in the SIMOND range, easy to transport and use with its mummy-shaped bag, hood with good coverage, and 3D assembly to prevent thermal bridges

Optimal temperature

Temperatures: Comfort temperature 23°F; Limit temperature 12°F; Extreme -24°F


Lightweight product thanks to down, with fill power = 800 CUIN (EU standard)

Compact design

Stuff sack volume: Size M = 10 L / size L = 11 L / size XL = 11.4 L

User comfort

Silky fabric; 100% polyamide; hood; 2-way zipper, downy draft flap.

Questions & Answers

Product Customer Reviews

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242 Reviews
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I wonder about the temperatures displayed...

Hello, I have just returned from an expedition to Iceland with nights with negative temperatures but not below -2°/-3° I slept very little because of the cold throughout the stay despite wearing tights and a top in merino (decathlon) A suitable insulating mattress And an MT900 tent We were a team and some had Makalu II (-9) and complained about the effectiveness as well. So I really doubt the temperatures announced I'm leaving again in a month for a another expedition in a cold area and I will therefore be forced to buy a new sleeping bag. Big fan and Decathlon customer for years, I admit to being very disappointed Romain

Warm and compressible

Excellent down. Easily stored in its compression bag. Warm and light

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Good product.

Good product.

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feathers were missing in several places

feathers were missing in several places, then even -5˚C was extreme...

Does its job perfectly!

Does its job perfectly!

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good value for money

good value for money

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I didn't have the opportunity...

I only had a chance to use it once, and the temps weren't cold, but the bag felt warm. It is light which is appreciable (even more compact would be the best). I bought a size M, which corresponds to my build. I recommend size L for people who move at night.

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Used during the TMB,…

Used during the TMB, very cocooning and warm, easy to store in the cover

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Sleeping bag very…

Very nice and warm sleeping bag. A little smell of duck at first.

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Sleeping bag

Sleeping bag for a daughter for longer trips in higher positions. Bought on recommendation and it's great.

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Sleeping bag

I'll see how I feel in it

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Excellent value

Used for 3 years for bivouacs under the stars in the Ariège Pyrenees between 2200 and 2700 meters above sea level at the beginning of June and the end of October. Minimum temperature - 4 and never cold. Excellent investment! I recommend this duvet.


Easy to carry and comfortable, I recommend!

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great top

great against the cold, very puffy, never felt cold inside, rather too warm. be careful, however, it is a perfect size since it is a sarcophagus made to be effective, do not expect to be able to move in it... Do not forget the additional meat bag
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Additional Product Information


Filling: 90.0% Grey Duck Down, 10.0% Grey Duck Feather


90% duck down, 10% feathers; Fill weight: 1.1 lbs in size M / 1.2 lbs in size L and 1.4 lbs in size XL; Fill Power (loft power of down) : 800 Cuin (CE standard)*Our feathers come from Chinese ducks farmed for their meat. We retrieve their feathers after they are culled. We keep the ducks' death certificates


Mummy shape: Shoulder-width (31.5” in size L) and tapers down toward feet with room to move but prevent heat loss at feet (7.9” in size L). Anatomic hood shape and a drawstring2-way front zipper with downy draft flap to keep out the cold


Available sizes: M // L // XL.Size M: for people measuring 5'7” maxSize L: for people measuring 6'1” maxSize XL: for people measuring 6'7” max Weight (lbs): M= 2.4 lbs / L= 2.6 lbs / XL= 2.8 lbsDimensions of folded stuff sack: M Ø 8.1” x 14.2” / L Ø 8.3” x 14.8” / XL Ø 8.3” x 14.2”Dimensions of compressed stuff sack: M Ø 8.1” x 12.2” / L Ø 8.3” x 12.6”/ XL Ø 8.3” x 13”

Temperature rating

On all our sleeping bags, we display the temperature ratings determined by testing in an independent lab (AITEX) based on European Standard EN 13537 (2016).The ”comfort temperature rating” is the lower limit when a user in the sleeping position is generally in thermal equilibrium and is neither hot or cold (based on a ”standard” woman in normal conditions of use).Choose your sleeping bag based on this feature.

What you must know about temperature ratings

A sleeping bag does not generate heat but ”maintains” heat generated by body. If you are exhausted and cold and you slip into your freezing and damp sleeping bag, you risk staying cold, whatever the sleeping bag's features!These temperature ratings therefore depend on a person's resistance to the cold (build, fatigue, etc.), on their equipment (mattress that insulates from the ground, etc.), on their clothing (naked, underwear, etc.), and on weather conditions (damp, windy, etc.).

Storage instructions

Store your sleeping bag in its storage cover in a dry place because there is the risk of the down deteriorating if it is compressed for too long in its compression sack



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    Minimal retail footprint

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