YETI Ice is impact resistant unlike a normal ice pack, you can drop it over and over without getting weird goo everywhere. That makes them perfect for the job site, deer camp, boat and anywhere else that tends to get a little bumpy. YETI specializes in making things tough and keeping things ridiculously cold. YETI Ice does both: it chills contents faster, and it will never break. This ice substitute is filled with science, dialed in to the most effective temperature to maximize the ice retention of any cooler. Its custom shape reduces freezing time and maximizes durability. From lunch box to skiff to elk camp, YETI Ice will take all the abuse needed to preserve your perishables longer.Pro tip: The 4 lb YETI Ice is the perfect size to fit comfortably in the bottom of the YETI Roadie 20 Qt Cooler.FeaturesStays Colder LongerImpact ResistantNo Messy Clean-UpFreezes Faster