The synthetic fill is super-lightweight and delivers warmth without adding bulk. It's shielded by a ripstop nylon outer that protects your bag from nicks and scratches for long-lasting performance.  Mummy-shaped bag with internal bungee adjustor cord Lightweight synthetic insulation Nylon Ripstop outer Left-sided zip Inner pocket Season rating: 4 Comfort rating: -2°C Limit rating: -8°C Extreme rating: -26°C Dimensions: 220x80cm Weight: 2.15kg