LONG 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 18º 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 because these thin cooler ice packs will ensure your food stays fresh when camping, hiking, or scouting for any traces of the Yeti. A BREEZE TO FREEZE - Filling this large ice pack is easy freezy. Just add water to your lunch ice pack, secure with the screw cap, and place in the freezer. Our Cooler Shock formula takes care of the rest! COMPACT FIT - Each durable ice pack for cooler bags and large lunch boxes weighs in at 5 lbs when filled and can replace up to 7 lbs of ice. Great for sodas, beers, meats, fruits, and even breast milk. Non-Hazardous 100% Made in the USA – 5 lbs. when filled, replaces 7 lbs. of ice. Cooler Shock hard gel pack outperforms ice and other gel packs. Why? They stay at 18° Degrees F. for hours on end using a phase change process. Check the others, not even close. Our packs release the largest amount of energy at freezer temperatures to get your food and beverages cold quickly. Put them in the freezer for 24-48 hours (depending on if it’s completely warm) and you will have portable cooling power that accelerates cooling. CoolerShock is shipped to you with a dry formula inside. Simply add water and put the screw cap on. The pack turns to gel in 15 minutes. It lasts all day (24 hours) in size-matched coolers listed on our website. Great for fishing, boating, parties, and tailgating. Add room temperature drinks to your cooler and drink them at near-freezing temperatures a few hours later. Drinks should not be left in direct contact with ice packs for a prolonged period as they can freeze. Built in Phoenix Arizona.