Mammut Perform Down Bag -10C Women's Sleeping Bag

Engineered to keep you comfortable at -3°C and safe down to -30°C, the Mammut Perform Down Bag -10C Women's delivers exceptional warmth-to-weight performance. Featuring 700g of 90/10 white duck down with a 700 cuin fill power, this mummy-shaped bag is built for alpine adventures and cold-weather camping.

Overview

The Perform Down Bag -10C is a women's-specific sleeping bag from Mammut's trusted Perform series. Its carefully cut shape narrows at the foot to reduce dead space and improve thermal efficiency, while the H-box baffle construction prevents down from shifting and creating cold spots. The 20D nylon shell and lining are lightweight yet durable, and the PFC-free DWR finish adds weather resistance without harming the environment.

What stands out

• RDS-certified 90/10 white duck down insulation – ethically sourced and traceable
• H-box baffle construction locks in heat and prevents cold spots
• Women's-specific mummy cut with roomy shoulder area (80 cm) and tapered foot (50 cm)
• Left-side zipper with internal draft collar and internal pocket for small essentials
• PFC-free DWR-coated 20D nylon shell and lining – reliable and eco-conscious

Technical details

• Comfort temperature: -3°C (EN 23537-1)
• Limit temperature: -10°C (EN 23537-1)
• Extreme temperature: -30°C (EN 23537-1)
• Fill weight: 700 g white duck down, 700 cuin fill power
• Max user height: 175 cm; shoulder width 80 cm; foot width 50 cm
• Packed volume: 7.5 L; zipper side: left
• Shell and lining: 20D nylon; season rating: 3-4 seasons

Our verdict

The Mammut Perform Down Bag -10C Women's strikes an excellent balance between packability, warmth, and sustainability. With its RDS down, PFC-free DWR, and thoughtful women's-specific design, it's a reliable companion for three-season camping and cold-weather mountain huts.