Olympia Kristallon Polycarbonate Hiball - 360ml 12.75oz Clear (Box 6)These polycarbonate tumblers are great both for everyday use in canteens, school dining halls and break rooms but also for seasonal events such as food markets and summer barbeques. With tough, rigid properties these hard wearing clear tumblers can resist knocks, bumps and drops and with the appearance of premium glassware.