Silicone is a synthetic, rubber-like material made from silicon (derived from sand), oxygen, carbon, and hydrogen. It's prized for its flexibility, durability, and resistance to extreme temperatures, which is why it's widely used in kitchenware, medical devices, and food storage. Food-grade silicone is non-toxic, odor-free, and won't leach chemicals into food or drinks. Our ice packs are made from 100% food-safe silicone.