YETI Ice - 4 LB YETI ICE is filled to the brim with science, dialed in to the most effective temperature to maximize the ice retention of any cooler, with a durable design that is break-resistant. Its custom shape reduces freezing time and multiple size options mean that you can outfit everything from your Hopper 30 to your Tundra 350 with YETI ICE. It works as an ice substitute or welcome addition to your ice stash to make sure your contents stay colder for longer.