Vacu Vin Active Wine Coolers were developed to chill wine quickly and keep it chilled for an extended period of time, without the need of a refrigerator or ice. The cooling sleeve contains 6 pockets of specifically formulated, non-toxic gel that expands when placed in a freezer for 6 hours or more. Upon removal from the freezer, the cooler easily slides over the outside of the wine bottle to chill the whole bottle within 5 minutes.