When it comes to transporting and storing temperature-sensitive food products, Polar Insulated Containers have proven most effect - they simply keep frozen products below freezing longer, even without dry ice. Every Polar container is designed for durability and are rotomolded from tough polyethylene and smooth outer shell devoid of joints. With two inches miminum foam insulation between double walls, Polar provides the nearest thing to the perfect shipping/storage container.

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Promens North America catalouge - Polar Merchandiser