Chilling drinks quickly and keeping them cold is no longer a problem using the Active Cooler! The amazing Active Coolers can best be described as super cold flexible ice jackets. They can, when taken from the freezer, simply be slipped over the bottle. The drink will be chilled after 5 minutes and stays cool for hours. The coolers are unbreakable and reusable.For bottles of beer and cans from 0.3 to 0.5 cl.