Cool Tote® reusable Freezer Packs stay cold three times as long as regular ice and are more compact. Order extras and keep in the freezer to be ready at a moments notice. Works like blue ice but lasts much longer, rarely develop leaks and gel is food grade and clear so perfectly safe and won"t stain. Perfect for Lunches, Picnics, Beverages. They are also great for icing sore muscles and other aches and pains. The freezer pack is a clear food grade gel that freezes solid and is packed in a fabric instead of plastic film so it absorbs condensation and won"t stick to your body. Each pack is 6"x4"x 1/2" and weighs 8 oz. Lead Free. Our 8 oz size is designed for lunch bags and small beverage containers and will last 4-6 hours depending on the outside temperature and the amount of insulation in your bag. Made in USA.