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.