GoLite Men's Adrenaline 20-Degree Bag Unique top zip design for efficient core temperature regulation AridZone Waterproof-breathable Pertex Endurance at the head and the foot to keep your bag warm and dry Slant box baffles with 5" of loft Up to 60" in girth Rating: 20 deg F/-7 deg C 1 lb 14 oz./850 g