YETI ICE is the most effective to maximize the ice retention of any cooler, with a durable design that is break-resistant. Its custom shape reduces freezing time and size allows it to be used in coolers and lunch bags. It works as an ice supplement, an addition to your ice stash to make sure your contents stay colder for longer. Measures: 8"W x 2 5/8"L x 1 5/8"H.