Insulating the bottle helps maintain pressure by keeping heat in the bottle when it's cold, or heat out when it's hot outside. The blankets are made of rugged, easily cleaned Nylon outer shell with insulation. It's also an excellent dress up accessory and perfect for covering battle-scarred bottles. Product Features:Helps Maintain PressureKeeps Heat In BottleKeeps Heat OutNylon Outer ShellRugged/Easily CleanedWith InsulationDress Up Accessory
