KEEP FOOD AND DRINKS COLD: ARCTIC ICE Alaskan Series packs are designed for use in a portable cooler to keep food and drinks cold without the risk of freezing! Great for lunches and picnics. Available in 5 Sizes: Small 0.75 lbs, Medium 1.5 lbs, Large 2.5 lbs, X-Large 5 lbs, and XX-Large 10 lbs. POWERED BY SCIENCE: The Alaskan packs contain a special non-toxic formula that cools around 32°F (0°C). They also feature a leak proof ultrasonic spin welded cap and a maximum surface area for faster cooling. They are reusable and dishwasher-safe (top rack). USE FOR A LIFETIME - These durable, efficient ice packs are designed for a lifetime of use and are backed by a limited lifetime warranty against defects in workmanship. LONG LASTING ICE PACKS: Alaskan portable ice packs for coolers have been proven to maintain food-safe temperatures for hours, even days, without the risk of freezing. MADE IN THE USA: All ARCTIC ICE packs are proudly made in the USA. Freezes at 33.8 Degrees Fahrenheit 4.25"X6.25"X1.25" All natural product derived from vegetable oils Tested to be reusable up to 100,000 times Lasts much longer than ice