This store gel cooler in freezer and chill your favorite beverage in minutes! Outer material made of Polyster. All you have to do is place the bag in the freezer for about 1-2 hours to freeze the gel pockets before using. Made from unique gel in a vinyl heat sealed case for no leaking. Also great for picnics, in coolers or on your aching bones for an ice pack - makes a great gift. Dimensions: 7.5"h x12"w when laid flat.