MAKALU I Light Sleeping Bag -5° Size M


for mountaineers or walkers looking for a lightweight and warm down sleeping bag for temperatures between -5°C and -11°C

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

Color: Electric blue / Vermilion

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Product benefits

Optimum temperature

Temperatures: Comfort -5°C; Limit -11°C; Extreme -31°C


Main compo: 40g/m². Fill power = 800 CUIN (CE 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; two-way zip, downy draft flap.

Technical information


90% duck down, 10% feathers;
Fill weight:
505 g in size M // 560 g in size L and 640 g in size XL;
Fill Power (loft power of down): 800 Cuin (EU standard)


Our traceability system allows us to guarantee that the feathers are sourced in line with our commitment to using responsible materials. Our suppliers are committed to only using feathers (sourced in China) from ducks raised for their meat and plucked after slaughter.
As a result, we have received the RDS (Responsible Down Standard) certification issued by a third-party body.


Mummy shape: Shoulder width (80 cm in size L) and tapers down towards feet with room to move but prevent heat loss at feet (20 cm in size L).
Anatomic hood shape and a drawcord
Two-way front zip with downy draft flap to keep out the cold


Available sizes: M // L // XL.
Size M: for people measuring 170 cm max
Size L: for people measuring 185 cm max
Size XL: for people measuring 200 cm max

Weight (g): M=1070 g / L=1160 g / XL=1260 g
Dimensions of folded stuff sack: M Ø19x35 cm / L Ø19.5x36 cm / XL Ø20x37 cm

Temperature rating

We display on all our sleeping bags, the temperature ratings tested 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, wind, etc.).

A score to compare the environmental impact of products

The environmental impact of the product is calculated over its entire life cycle using different indicators. An overall score (ABCDE) is attributed to help you easily identify the products with the best environmental performance by comparing products of the same type with one another (T-shirts, trousers, backpacks, etc.). Decathlon chose to apply this voluntary environmental labelling scheme. For more information, visit:


2 years

Product concept & technology

Product Composition

Filling 90% Grey Duck Down, 10% Grey Duck Feather


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

Approved By

team SIMOND mountaineers on numerous expeditions: especially on Nuptse (Everest)

Maintenance advice

Machine wash - 30° max - gentle

Do not bleach

Tumble dry - low heat

Do not iron

Do not dry-clean


Customer reviews


Environmental Impact

The carbon footprint of this product is:
23.95 kg CO2e
1 kg of CO2e represents 5km in a petrol car (according to the Base Carbone© of ADEME)
What's the carbon footprint ? We evaluate the environmental impact of all our products. At all stages of their life cycle: from the extraction of the raw material, passing through transport to the plant which transforms them, the transformation, the manufacture, the transport of the finished product, until its use and end of life. More details on the measurement of the carbon footprint of our products