Cooler Shock Reusable Ice Packs for Cooler - Long Lasting Cold Freezer Packs for Coolers and Lunch Boxes - Cooler Ice Packs for Camping Gear, Fishing, Road Trips, Beach Must HavesLASTING COLD Our ice packs for coolers are designed to keep your favorite foods and soft drinks cold for 24 to 48 hours. With a phase change point of 18 F, they'll stay colder and last longer than ice VERSATILE Each of our all purpose 10" x 10" cooler ice packs can replace 3lbs worth of traditional ice, leaving more room in your cooler for food and drinks. These medium sized reusable ice packs are designed for use with cooler backpacks, insulated