Not only improves efficiency but also protects against dirt, dust, sand and other elements. Off-road tough materials like high quality Oxford nylon fabric on the sides and top. Hard-wearing rubber coated nylon is used for the bottom and ends. Insulated with an aluminum coated polyester lining. Keep your fridge looking and operating like new. Convenient cut-outs for easy access to the carrying handles. Pockets on the exterior next to the USB output can be used for phones or other gear.