The Polarbox coolers in a stylish retro design function like a conventional cooler: simply add ice cubes or a frozen ice pack, pack your provisions, and you're ready to go. Whether by the water or in the great outdoors, the Polarbox, available in various colors, is a real eye-catcher. A double layer of polypropylene (PP) and incorporated polystyrene (AIRPOP) ensure maximum insulation.