Alaskan Series freezes at (+1C) (+33.8F) and efficiently keeps food, drinks and emergency staples chilled much longer than the same volume of ice. A great product for keeping your cooler thermally regulated at a home refrigerator temperature without the mess of melted ice. Stacks and stores very neatly in a compact area in your freezer while charging for the next use. The Alaskan Series is a Phase Change Material that is molecularly engineered to maintain a specific refrigerated (33.8F) temperature for prolonged periods of time in a controlled environment. Containers are designed for maximum cooling (energy transfer) over the broad surface area offering better cooling results for quicker cooling of payload. Alaskan Series offers back-up refrigerated cooling in the event of an emergency, disaster or lengthy power outage to prevent spoilage of medicines or emergency staples. Arctic Ice come in four unique sizes to meet specific cooling requirements for most any application from lunch boxes to super size extreme coolers. Arctic Ice is derived from ALL NATURAL PLANT OILS and provides consistent cooling for days with a lifetime of use. No more mess and no more melting ice.