Klean kanteen 473ml vacuum insulated pint cuptumbler brush stainless description klean kanteens quest to find and replace single use items knows no bounds our tumblers lead the charge replacing years of single use cups while handily out performing plastic and paper we firmly believe that the best way to replace a single use item is not just to make a durable replacement but one that actually does more anything a single use paper or plastic cup can do our stainless steel vacuum tumb