Keep your cooler, beach bag, or picnic basket cool while on the go, and outfit your bag with the cooler shock reusable fill and freeze ice packs. Remaining at 18 degrees Fahrenheit once frozen, these packs will keep your quality cooler cold for up to 24 to 48 hours. Whether you are going on a day trip to the beach, on a hike, or working long shifts you need fresh and cool food to get you through the day. Ideal for outdoor adventuring and work lunch boxes these thin ice packs will ensure your lunch or snacks stay fresh. A breeze to freeze, you simply fill the large ice packs with water, secure the screw cap, and place in the freezer; the cooler shock formula takes care of the rest. Each ice pack weighs in at 5 pounds and replaces up to 7 pounds of ice to keep drinks and snacks cool. A hassle-free alternative to dry ice, the cooler shock reusable fill and freeze ice packs keep your food safe, dry, and cold.