DESC: The Golite Adrenaline 40 is a premium 800-fill goose down, 40 sleeping bag that offers superior warmth, unmatched comfort and versatility, coupled with lite-weight construction and a male-specific fit.The waterproof Pertex Endurance Arid Zones at the head and foot of the bag protect against condensation in critical areas.A trimmer mummy shape offers a closer fit with warmth efficiency and the half-length top zip provides the most efficient core temperature regulation.