Rotomolded: Our coolers are made from rotationally-molded LLDPE plastic and are designed to achieve even wall thicknesses for optimal durability Thermal Properties: All hard-sided coolers are pressure injected with up to two inches of Ecomate polyurethane foam for optimal cooling. This unique insulation has no global warming potential, no ozone depletion potential, and is made with no VOCs LID GASKET - A cooler isn't cool if it doesn't keep things cold. Grizzly Cooler lids seal for optimal insulation even in hot temperatures with a rubber gasket to keep cold air trapped inside to extend the life of ice. Everything for your adventures stay colder, fresher, longer; Dry goods tray sold separately Interagency Grizzly Bear Committee (IGBC) Certified: All Grizzly hardside coolers are IGBC Certified Bear-Resistant. Each hardside cooler also comes with two lock holes to keep your cooler secure and your contents safe MADE IN THE USA with a LIFETIME WARRANTY Customer Service - If you have an issue with your order please send us a message, we will respond promptly