A reliable choice for weekend camping trips, the full-featured Trestles 0 is an all-purpose sleeping bag that insulates even in sustained cold and damp conditions to ensure comfort and warmth. Updated style lines and a fabric liner keep you comfortable while resting up for the next day of your adventure. Outer shell: 100% Polyester DWR. Liner: 100% Polyester Tafffeta DWR 2.2 oz.. Insulation: SpiraFil 889169893490 31306400006 23760