FRIO Extra Small Insulin Cooling Case & Eye Drop Wallet - Portable Long Lasting Cooling System for Travel, Hiking, and Daily Use

FRIO Insulin Cooler Medium Wallet is a simple to use medication cooling system that is ideal for use while traveling or during power outages. It relies on the use of cool water to stay cold, no refrigeration or ice required. By immersing the wallet into cold water for about five to 15 minutes, crystals on the inside expand into a gel that is able to remain cold for several days.