Slumberjack Latitude -20 Degree Synthetic Sleeping Bag Shell Fabric: 100% Polyester Liner Fabric: 100% Polyester Insulation Type: 100% Polyester Fiber Imported Temp Rating : -20 / -29C Insulation: Slumberloft Synthetic Weight 6lb 4oz. Two-layer, off-set construction and differential cut prevents cold spots Flip Over Hood allows user to flip the hood inside out for the option of a flat hood or contoured hood