Engel Ice changes phase 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.  Engel Ice Packs will maintain food-safe temperatures for hours, even days without the risk of freezing. When finished using, simply recharge in your household freezer until needed again. Freezing takes about 6-8 hours. It is recommended to use Engel Ice Packs in combination with ice, to extend the life of ice up to 50%. Dishwasher safe and reusable for years!  AVAILABLE IN 2.5lb & 5lb PACKS 32°F REFRIGERATOR TEMPERATURE RUGGED UV STABILIZED COLOR CONTAINER NON-TOXICREUSABLE MAXIMUM SURFACE AREA FOR FASTER COOLING LEAK-PROOF ULTRA SONIC SPIN WELDED CAP DIMENSIONS  L = 9.5” x 7.5” x 1.25”                        XL= 11” x 8.75” x 2” LIMITED LIFETIME WARRANTY MADE IN THE USA!