Feature: 1. Ultra-Light Inner Tube: Made of high-quality TPU, it weighs 70% less than regular butyl rubber inner tubes and occupies 50% less space when placed in the pocket, the inner tubes are brightly colored and easy to identify. 2. Puncture Resistant: With good puncture resistance, wear resistance, and durability. They ward off sudden flats and maintain stable performance, even at lower tire pressures. They also have excellent load-carrying capacity. 3. Reduce Rolling Resistance: Because the bike\u0027s inner tube is only 28g, it will be lighter and more delicate, and the friction strength generated on the tire is small, which can achieve maximum speeds and performance. 4. Enhanced Tightness: Choose from 45mm/65mm and 85mm Presta valves lengths to suit your bike rim. These bicycle inner tubes are light, making them easy to carry and very suitable as portable spare inner tubes. 5. Versatile Compatibility: 700x23-32C type. Engineered for both disc and rim brake systems, these bicycle inner tubes cater to a diverse scope of road bicycles. They excel in challenging racing and riding conditions. Specification: Adopts a special TPU construction, which greatly improves the durability compared with the traditional rubber inner tube; In addition, the TUP material is oil and water-resistant and has excellent load-carrying capacity and impact resistance. Our innovative tubes deliver exceptional puncture resistance, ensuring heightened safety. They ward off sudden flats and maintain stable performance, even at lower tire pressures. Designed to fit various tire sizes, including 700 x 23/25/28/30/32C, ensuring compatibility with a wide scope of road bicycles. Features: Ultra-Light Inner Tube: Made of high-quality TPU, it weighs 70% less than regular butyl rubber inner tubes and occupies 50% less space when placed in the pocket, the inner tubes are brightly colored and easy to identify. Puncture Resistant: With good puncture resistance, wear resistance, and durability. They ward off sudden flats and maintain stable performance, even at lower tire pressures. They also have excellent load-carrying capacity. Reduce Rolling Resistance: Because the bike's inner tube is only 28g, it will be lighter and more delicate, and the friction strength generated on the tire is small, which can achieve maximum speeds and performance. Enhanced Tightness: Choose from 45mm/65mm and 85mm Presta valves lengths to suit your bike rim. These bicycle inner tubes are light, making them easy to carry and very suitable as portable spare inner tubes. Versatile Compatibility: 700x23-32C type. Engineered for both disc and rim brake systems, these bicycle inner tubes cater to a diverse scope of road bicycles. They excel in challenging racing and riding conditions. Specifications: Valves Type: 45mm, 65mm, 85mm (Optional) Material: TPU Color: Purple Item Weight: 28g/0.99oz Package Size: 106 * 42 * 36mm/4.17 * 1.65 * 1.42in Package Weight: 40g/1.41oz Notes: 1. Do not inflate more than 5PSI/0.5Bar without the guard of the outer tire 2. Use a flat and smooth wheel rim pad without foreign matter 3. Before installing the outer tire, check whether the inner tube is leaking. Packing List: 1*Inner Tube Package List: 1*Inner Tube