Cooler Shock Ice Packs - Reusable, Premium, Large Pack and Lunch Set for Long Term Use - Cools Faster Than Ice - Cooler AccessoriesLONG LASTING COOL Keep your favorite snacks and soft drinks cold with these reusable ice packs for coolers, beach bags, and picnic baskets. Once frozen, they stay at 18 F for up to 24 48 hours. NON HAZARDOUS If you want a hassle free alternative to dry ice, our reusable ice pack will do the trick. It's food safe, so you can have peace of mind whenever you put them in your lunch cooler. CHILL FOR TRAVEL Call them the sidekick to every outdoor adventure