Exped DreamWalker 450 Sleeping Bag Shell: 100% Nylon Lining: 100% Polyester. Fill: Grey Goosedown 90/ 10, Fillpower 840 cuinch Imported Highest quality waterproof sleeping bag No cold spots or down shift due to horizontal and vertical baffles Temperature rating of -6 C or 20 F Lock zippers features reflective glow-in-the-dark pulls that wont accidently open Tuck-stitch design with bar-tacking at stress points