coolers designed for the punishing use that coolers encounter on boats. Outstanding features include rugged hinges, comfort-grip handles for a secure grip and strong stainless steel latches. Marine features include liners that protect against bacterial odors and stains, ultraviolet inhibitors that guard against sun damage and infrared technology that boosts cooler performance by keeping their surfaces cooler. Material: Polyethylene Hinge/Latch. Hardware: Stainless steel hinges and latches. Drain Plug: Threaded drain plug. Handles/Wheels: Rubberized handles.