Snug and sporty, The Copper River 30 Degree Sleeping Bag is a double layer, off-set, multi-needle quilt constructed and insulated with ThermaShield synthetic fill which maintains its insulating properties even when wet. Great for hunting and camping use, spring through fall. The Copper River has a fully adjustable adjustable contoured hood, zipper draft tube and a trapezoidal foot box ensure comfort and warmth.