Armageddon Gear’s Beer Bivy is designed to protect cans and bottles from thermal shift due to atmospheric exposure. The MilSpec 500D Cordura nylon shell provides protection and a positive-gripping surface, and adjustable shock-cord retention keeps the bivy in place.
Two sizes are available: 12oz can and 12oz bottle*, in the following colors: A-TACS AU and FG, Black, Coyote Brown, and MultiCam.
*Not compatible with 40oz malt-liquor bottles. You should be ashamed of yourself for drinking that shit, anyway. (from the Armageddon Gear website)