Polyester Imported Outer shell made of highly durable 210T polyester ripstop fabric, paired with a brushed polyester liner Designed to keep you warm during extreme weather, this 0 degree bag is filled with our 7 denier TechLoft Silver insulation Insulated zipper baffle and two-layer offset construction s to trap in maximum heat and prevent unwanted cold spots Sleep side-by-side or simply unzip to have two separate bags, internal pockets provided to keep small items nearby Dimensions: 80"L x 68"W; Weight: 12 lbs. 14 oz.; Fill Weight: 140 oz.; Compression stuff sack and webbing straps included