The Arctic IceA(R) Chillin' DiscA(R) works great as a "colder than ice" substitute in both a cooler or even a bucket. Place one Chillin' Disc at the bottom of any 5-gallon bucket, fill with pre-chilled contents, and top it off with another Chillin' Disc. With a freezing point of 28.4Adeg F, the Chillin' Disc keeps the contents of your cooler colder than ice. It's a simple solution for keeping food and drinks cold all afternoon without the hassle and mess of ice. Fits inside any 5-gallon bucket Freezing point of 28.4Adeg F, colder than ice Made from non-toxic, phase-change materials Dishwasher safe Keeps items cool, cold or frozen 4.5 lbs.