| _ultra33

ultra33UltraSwim 33.3 offers you the opportunity to complete the iconic 33.3km distance of the English Channel, spread over 5-7 swims, over a 4-day long weekend in stunning locations around the world.NOTE: The S30 ultra series can be expanded to 935*905mm with S30-XY extension kit, but need another adapter cable to connect them. click there to get the cable Main Features: 1.