【Ultra-light Inner Tube】Made of thermoplastic polyurethane elastomer material (TPU), it weighs 70% less than ordinary butyl rubber inner tubes and takes up 50% less space when placed in the pocket, these bicycle inner tube weigh a mere 45g, the inner tubes are brightly colored, easy to identify, making it easy to carry and very suitable as a portable spare inner tube

【Strong and Puncture Resistant】The new TPU material has good puncture resistance, wear resistance, durability and anti-aging. They ward off sudden flats and maintain stable performance, even at lower tire pressures. In addition, the TPU material is oil and water resistant, and has excellent load-carrying capacity and impact resistance

【Enhanced Air Tightness】These road bike inner tube feature presta valves ensuring superior air tightness and reliability. Choose from 45mm/65mm/85mm valve lengths to suit your bike rim. Engineered for both disc and rim brake systems, these bicycle inner tubes cater to a diverse range of road vehicles. They excel in challenging racing and riding conditions

【Fits Multiple Tire Sizes】This Gravel series Inner Tube is compatible with many tire sizes: 700/32C-47C (Includes Bike Tube Patch Repair Kits). Ridenow offers three versions in weight for Gravel bike series Inner Tube: 45g

【Proper Inflation Instructions】To prevent irreversible damage, avoid overinflating the inner tube when not installed in the tire. When installing, start with an initial inflation of 0.5 PSI, ensuring that the inner tube adheres closely to the tire's inner wall