A few years ago the folks at Engel designed a new ice chest. The new cooler was not just an improvement on the old models, but a brand new concept, designed from the ground up to re-define what an ice chest could be. Take a close look at what makes an Engel DeepBlue ice chest the number one rated ice chest in the country. Rotationally-molded of seamless polyethylene, it’s tough enough to stand up to a hungry Grizzly bear. (In fact, it’s an approved bear-resistant container.) A full two-inches of dense polyurethane foam is injected top, bottom and sides, to provide 8-10 days of cold-keeping capability. But this is just the start. see all the features.