Goodyear brings you rubber products... for your bicycle! Butyl rubber provides a smooth ride for every age rider and all types of bicycles. These heavy-duty tubes are 30% thicker than conventional tubes, making them much more puncture resistant. This tube is designed to fit all 26" x 1.9 - 2.3" tires and this comes in a 2 pack. It features an American or Schrader valve that fits any hand pump or floor pump. Trust the Goodyear name for your bicycle.