CSYLX Bike Tube 16" x 2.125/2.25/2.35 Compatible with 16 Inch 2.10-2.40 Bicycle Inner Tube

bike tube: Tube Replacement: The bike tube is made from premium butyl rubber. It features better sealing performance, ozone resistant, anti-aging, shock absorption and electrical insulation merits. Bicycle inner tubes are always available at home, necessary for enjoyable riding.