NTK Viper 3 Season Sleeping Bag Black/Green Shell: 100% Polyester 190T Linning: Poly-Cotton (70% Polyester | 30% Cotton) Filling: Multy-Channel Hollow Fiber | 200 g/m2 Comfort Temperature: 53.6F / Extreme Temperature: 41F . Half zip for extra performance Size: 6.9 Ft x 2.46 Ft