Ice Pack 2 blocks Tough polypropylene exterior Heat sealed leak proof cap Non toxic aqueous liquid Weight: 200g each Size: 80 x 42 x 148 mm Cooler Ice Blocks 400Cc | 0286-36 These non-toxic ice packs will keep food cold and fresh. Put it in the freezer over night, and then drop it in your lunchbox, shopping bag or picnic hamper.