Arctic Ice® Alaskan Series® freezes at 32°F, efficiently keeping food and drinks cold without the risk of freezing. The active ingredients are non-toxic and housed in a rugged container designed to provide maximum surface area to increase the efficiency at which they cool. In several tests, Alaskan Series® panels have maintained food-safe temperatures for hours, even days without the risk of freezing. When finished using, simply store in freezer until needed again. Freeze the Alaskan Series® panels in any freezer 6-8 hours prior to use. Alaskan Series® panels can also be used in combination with ice to extend the life of ice up to 50%. Alaskan Series® panels are even top-rack dishwasher safe, making them reusable for years! 32°F Freezing Temperature. Rugged UV Stabilized Color Container. Non Toxic. Reusable. Maximum Surface Area for Faster Cooling. Leak Proof Ultra Sonic Spin Welded Cap. Limited Lifetime Warranty. Made in the USA!.