●Ultra Lightweight: The inner tube for bicycle weighs only 1.1 oz (30 g), and weighs approximately 3.5 oz (100 g) than conventional butyl rubber inner tubes, and a pair of 7.1 oz (200 g), reducing the burden on the bicycle and making your ride lighter (there are videos attached to the product detail page) ●FITS MULTIPLE TIRE SIZES: This 28" 700C load tube accommodates many tire sizes. 18/23/25/28 30/32c ●Abrasion resistant and durable: The inner tube for bicycle uses a special TPU material, which greatly improves durability compared to conventional rubber inner tubes, and the TUP material is oil and water resistant, and has excellent load bearing and impact resistance ●Reduces rolling resistance: The TPU bicycle inner tube is only 1.1 oz (30 g), making it lighter and more delicate than a regular 300g rubber inner tube, and the friction force generated on the tire is smaller, allowing you to achieve the highest speed and performance ●SAVE MONEY: Durable and saves you money. In addition, you can avoid the hassle of frequently replacing the inner tube of your bicycle. For outdoor riders who want to consider