Ideal for use in cool bags, cool boxes and lunch boxes, Thermos Ice Packs help to keep food and drinks cool and fresh for hours. Just freeze them until solid and they will keep cold for many hours. Features and Benefits Leak-proof - Made with tough polypropylene, the packs are very durable and will not leak. Versatile - Use them for any cooling requirement. Reusable - Freeze them again and again, and store in the freezer so they are always ready to go. Specifications Material: Tough polypropylene Non-toxic aqueous liquid Pack of 2 Heat-sealed leak-proof cap Dimensions (per pack): H8 x W7 x D1.5cm 2 x 100g