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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

Free shipping over $49

Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8495188

Product Videos

Product Features

A photo of the Simond Makalu I Light Sleeping Bag in use
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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247 Reviews
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Tested and approved

I invested in a sleeping bag to bivouac in the mountains in the Pyrenees even in December. I am very satisfied to sleep warm.

Excellent sleeping bag

I tried it a few days ago in a bivouac at an altitude of 2000 m. After a while I even felt hot. Excellent opening in the feet. Very compact and easy to fold. I'm 1.70cm tall and I fit well in size M, it's not small. Excellent purchase.

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Already a user of the models…

Already a user of previous models for several years, quality always there. a bit tight for intensive activity in periods of extreme cold; but suitable in 75% of situations,

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a warm and light bag, perfect for bivouacs

Nothing to say about the product, does the job: light, warm. Note: The storage mesh bag was missing on delivery, how do I get one? difficult to find the link on the decathlon website... thank you in advance for your help.

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Lose all its characteristics

Hello, I was pleasantly surprised by the qualities of this sleeping bag during the first days of use, and new. However, the more I use it, the more it loses its thermal and mechanical qualities. In fact, it (the sleeping bag) loses all its loft, although it is systematically stored in its storage compartment, in a dry place. when I take it out of its storage case, it does not regain any fluffiness, even after several days out of its storage bag, lying flat. Despite this, when I try to use it, its thermal qualities are no longer there. Indeed, while it allowed me to face cold temperatures (from minus 2 to zero degrees Celsius) just in underwear when it was new, I can now barely spend an autumn night at seven degrees Celsius without wool underwear plus a fleece. In other words it does not keep its promises, only after a few uses, despite a lot of attention.

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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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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



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

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    Research and development

    delivers high-quality cost-effective products

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    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


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