Set of 2 CYCLAMI 30g Ultralight Road Bike TPU Inner Tubes for 700C Bike Tires (28 Inch, 700x18, 23, 25, 28, 30, 32c), French Valve Length 65mm, Japane

Ultra-lightweight: These bicycle inner tubes weigh only 30g, approximately 100g lighter than conventional butyl rubber inner tubes, resulting in a 200g weight reduction per pair, reducing the burden on your bicycle and improving ride comfort. (Installation video available on the product details page) Compatible with multiple tire sizes: These 28-inch 700C road tubes are compatible with many tire sizes: 18/23/25/28, 30/32c Wear-resistant and durable: These bicycle inner tubes utilize a special TPU material, significantly improving durability compared to conventional rubber inner tubes. Furthermore, TPU material is oil- and water-resistant, offering excellent load-bearing and impact resistance. Reduced rolling resistance: At only 30g, TPU bicycle inner tubes are lighter and more delicate than typical 300g rubber inner tubes, reducing friction on the tire and achieving optimal speed and performance. In case of air leaks due to initial defects, please contact CYCLAMI Customer Service. After inspecting the product, we will replace it if deemed defective.