Cryopak's BPA-free non-toxic reusable ice pack stays cold for up to 24 hours, due to its interior patented and unique formula. This pack is made of BPA-free nylon and polyethylene that is accepted compliance with USFDA and USDA standards. The material is also flexible when frozen, allowing you to wrap it around items you want to keep cold. Due to its flexibility, this pack evenly distributes the temperature. Equivalent to 8-10 pounds of ice, but takes up just a fraction of the space in your freezer and costs significantly less over time. The modular sheets can be cut to fit any size, and frozen over and over again for reuse. Like all reusable ice packs, it's another way to cut down on plastic bags - and it works even better than ice for a sports wrap or first aid. Reusable ice pack keeps lunches insulated for up to 24 hours - three times longer than your average ice pack! Made of food-safe materials that can be frozen over and over again - perfect for a waste-free lunch every day Set