The warmest of our lightest bags. Perfect for going fast and light in the mountains. Specifications Plasma(TM) 10D outer shell is incredibly light and exceptionally breathable 650g of 90-10 Russian Goose Down with a minimum fill power of 800 Alpine fit with EXLA(R) system improves loft and maximises thermal efficiency Slanted box-wall baffles throughout Ground level side seams 7 baffle low volume anatomically shaped hood 4 baffle anatomically shaped and offset foot-box Full length Gemini(TM) zip baffle Plasma(TM) 10D inner throughout Supplied with waterproof roll-top stuff-sack and storage cube Weight : 1000g / 35.3oz 100% Polyamide outer/inner, Down fill Plasma(TM) 10D outer shell is incredibly light and exceptionally breathable Alpine fit with EXLA(R) system improves loft and maximises thermal efficiency Full length Gemini(TM) zip baffle A six-baffle foot piece, our most advanced design, and featuring both our Bulls Eye Technology and offset Sharks Toe foot constructions. 7 baffles provide exceptional down control for performance and excellent insulation. Supplied with waterproof roll-top stuff-sack and storage cube