Makalu III Light Sleeping Bag - Size L

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Key feature
Mummy shaped sleeping bag, hood offering good coverage, 3D structure to prevent thermal bridges, two-way zip opening lined with flap
Users reviews
3.8 / 5 5 ratings

Products benefits

Optimum temperature
Temperatures Comfort temperature -12°C; Limit temperature -19°C; Extreme -42°C
Lightweight product thanks to down, with fill power = 800 CUIN (EU standard)
Compact design
Stuff sack volume: Size L = 27 L
User comfort
Silky fabric; 100% polyamide; hood; two-way zip, downy draft flap.


Padding : 90.0% Grey duck down, Padding : 10.0% Grey duck feather Main fabric : 100.0% Polyamide Carry bag : 100.0% Polyamide
Approved by
team SIMOND mountaineers on numerous expeditions: especially on Nuptse (Everest)
2 years


Storage Tips
Store your sleeping bag in its storage bag in a dry, ventilated space because the down may deteriorate if compressed for too long in the compression sack

Additional information

90% duck down,10 % feather; Fill weight: 1,100 g in size L; 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 (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: L Size L: for people measuring 185 cm max Dimensions (cm) : L: 210x80 cm Weight (g): L = 1775 g Folded dimensions: Ø28 x L 49 cm Compressed stuff bag dimensions: Ø28 x L 44 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” is the lowest comfortable temperature at which a user in a relaxed position is balanced overall in terms of their body temperature and is neither too hot nor cold (as determined for an average female user under normal conditions). 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 in to your freezing and damp sleeping bag, you risk staying cold whatever the sleeping bag's features! These temperatures are therefore dependent on the user’s resistance to cold (build, fatigue levels...), their equipment (an insulated sleeping mat,...), their clothing (naked, base layers,...) and climatic conditions (humidity, wind,...).
A score to compare the environmental impact of products
The environmental impact of the product is calculated over its entire life cycle and with different indicators. An overall score of ABCDE is designed to help you easily identify the products with the best environmental performance by comparing products of the same type (T-shirts, trousers, backpacks...).Decathlon is a voluntary participant in this environmental labelling initiative. For more info:

Users reviews

3.8 / 5 5 ratings
4 users recommended this product
Distribution of ratings

At Decathlon, reviews are reliable.

  • Man
    20-29 years old
    18 September 2019
    Use since 1 week or less
    That review has been deposited on this product version
    Looks nice

    Will use in comming months...and update then ...fill weight shown on the manufacturer ( simond ) website is 1100 g for size XL but on decathalon the same fill weight is shown for size L , Correct fill weight for size L should be displayed since only size L is available on decathalon

    Brand response :

    Hi AP,

    Thank you for reaching out regarding your doubt about the Simond Makalu III down sleeping bag.

    You are right, there is a mismatch between and But fortunately the information on Indian website is correct. You can refer to for the same.

    I will reach out to the UK website team and get the information corrected.

    Once again thanks for highlighting.

    I hope you get to take the sleeping bag out soon. I recently used this bag on the base of Mount Yunam and was too hot in fact (temp were -10 to -12 at night). So yeah I can say you will have a nice cozy time during your expeditions. Just make sure you have a thick mattress underneath to increase ground insulation and a synthetic liner to increase the life of sleeping bag.

    All the best for your upcoming adventures!

    Regards, Ravindra Charan Product Trainer & Country Sport Leader- Climbing & Mountaineering

  • Man
    40-49 years old
    02 October 2019
    Use since 1 week or less
    That review has been deposited on this product version

    Je reviens d'un Treck au Ladack ou les températures étaient largement en dessous de la négative, je n'ai jamais eu froid. Il est facile à plier et les fermetures de très bonne qualité.
    Je recommande

  • 30 April 2019
    Use since 1 week or less
    That review has been deposited on this product version
    Respecte ses promesses

    Testé en hiver par -5°C et aucun problème de température.
    Se replie très bien après utilisation.