Engel Coolers High Performance ENG35 Roto-Molded Cooler Best in class ice retention and overall performance, holds ice for up to 10 days Rotationally molded with 2 inches of high density closed-cell polyurethane insulation all round and is certified Bear-Resistant - so its vertually industructable and built to last! IGBC Certified bear resistant container - when 2 locks used Silicone airtight gasket, adjustable recessed marine grade compression latches and UV-Resistant Contruction Dry Ice compatable. Non-Marking rubber feet. 10 year warranty 10 year warranty