... .Watertight and reusable 4.Weight: 250g hot-cold pack1.Magical ice pack 2.COOL: High cold capacity 3.Watertight and reusable ... process2. Nontoxic, elastic3. High cold capacity, ideal substitute of ice cubes, dry ice and other cold producing medium4. Widely used in long-distance ... in freezer for 12 hours before use. Reusable. CautionPut the ice bag flat before freezing, or put it into a certain ...