An incredibly light, versatile and packable sleeping bag well suited to backpacking and cycle touring that will still happily cope with cooler nights during the spring and summer months. Specifications HELIUM(TM) 20D outer shell is very light and highly breathable 467g of 90-10 Pure Duck Down with a minimum fill power of 700 GT fit: a wider and longer version of our Alpine Fit Slanted Box-Wall baffles throughout Mid-level side seams 5 baffle anatomically shaped hood 4 baffle anatomically shaped and offset foot-box Full length Gemini(TM) zip baffle and integrated collar with Lode Lock(TM) closure Supplied with waterproof roll-top stuff-sack and storage cube Weight : 1030g / 36.3oz 100% Polyamide outer/inner, Down fill HELIUM(TM) 20D outer shell is very light and highly breathable GT fit: a wider and longer version of our Alpine Fit