Made with pure water, Natural Ice is safer for family around foods and drinks. Freezes faster than chemical gel packs and lasts up to 2 times longer. Sealed tight in durable reinforced plastic. Reusable material can be hand-washed and is easy-to-clean with soap and water. Plastic sheets are flexible to wrap around items or simply lay flat conforming to the valuable cooler space available. Can be cut for custom fit. Eliminates cold water mess to get cooler contents soggy or hands cold and wet. Recommended for use with personal hard and soft side coolers.