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Do not dry clean or use solvents to remove stains

Use washing machine and tumbler with minimum capacity 10kg

Machine wash on wool/delicates cycle (max. 30° C)

The ASP Down Winter offers maximum comfort in minimal temperatures and dry conditions. The sleeping bag features stretch inserts in the knee area to allow greater freedom of movement, a great benefit for people who prefer to sleep on their side or with retracted legs. The stretch down-proof fabric allows natural movements and makes the sleeping bag feel amazingly comfortable. From hiking to multi-day ski tours, the ASP Down Winter with 90/10 premium goose down and a fill power of 700 cuin offers excellent warmth to minimal weight and packing volume ratio. The design of the sleeping bag is inspired by the legendary ASP snake, hence its name. A sleeping bag that sets new standards in design and function.

ASP Down Winter

Down sleeping bag for extreme temperatures

This product contains down and feathers sourced from well-treated animals. Collection from live birds (live-plucking) as well as force-feeding are strictly prohibited.

Responsible down

The bluesign® SYSTEM is a solution for sustainable textile production that eliminates the use of harmful substances. bluesign® PRODUCTS guarantee a responsible use of resources with a minimum impact on people and the environment.

bluesign® PRODUCT

Perfluorinated compounds (PFCs) are often used for waterproofing but are practically non-biodegradable. Mammut is committed to replacing non-biodegradable fabric treatments with more sustainable high-performance alternatives.

PFC-free DWR

Fair Wear works to ensure fair and safe working conditions in garment factories. The non-profit engages directly with factories, trade unions, NGOs and governments to protect workers’ rights.

Fair Wear

The fill power of down is rated in cuin (cubic inches per ounce): the higher the cuin rating, the greater the wadding and therefore thermal insulation per weight. 

Mammut Down 700 cuin

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Something for spring

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To redeem your free gift you must: Build your basket with a minimum of £200 total value. Add one size of the Crag Cap LO Logo - Black to your cart.Add the code FREEGIFT at checkout for the discount to apply.

This offer cannot be combined with other voucher codes, discounts, or promotions and ends 30th April or until stocks last. Offer limited to 1 free product (1191-01890-0001) per order.