Sleep soundly through the night in the great outdoors with the Copper River Mummy 40˚F Sleeping Bag. Nearly 2 lbs. of four-chamber polyester hollow-fiber insulation traps heat to keep you warm when the temperature dips. The water-resistant 210T polyester-ripstop shell seals out moisture, while the lightweight 210T polyester-taffeta liner offers all-night comfort. Warm single-layer construction. No. 8 anti-snag coil zipper with insulated baffle. Imported.