COX AC-001 Caulk Warmer Bag Warming bag for temperature sensitive products on the jobsite like caulk, insulating foam guns, spray cans, gloves, tapes, tiles and more Holds up to four 10-ounce cartridges or four 20-ounce sausage packs Insulated design retains heat when unplugged Heavy-duty, waterproof nylon construction 12 VDC 100 watt inverter with USB also available from Cox (AC-003)