2 Ply Techni Ice Hot and Cold Sheet (24 cells)
The perfect dry ice alternative, this stuff stays cold for days. Use in a cooler, a lunch box, or anywhere else to keep stuff cold way longer than regular ice, or get hot to soothe muscle aches or preserve cooked food. With 24 cells in each sheet, you can cut to any size you need. Does not leak water when warmed, and can be reused over and over.