[Fits multiple tire sizes] This 28Inch 700C road tube is compatible with many tire sizes: 18/23/25/28 30/32c [Ultra light] The weight of the bicycle inner tube is only 36 grams, which is about 100 grams less than the traditional butyl rubber inner tube, a pair of which can save 200 grams, reduce the burden on the bicycle, and make lighter [Wear- and ] The 700c tpu inner tube adopts a special TPU material, which also greatly improves the durability compared with the traditional rubber inner tube; In addition, the TUP material is oil and water , and has excellent load-carrying capacity and impact resistance [Reduce rolling resistance] Because the TPU bike inner tube 700c is only 36g, it be lighter and more delicate than 300g rubber inner tube, and the friction force generated on the tire is small, which can achieve the maximum speed and performance Specifications:SV 45mm Color:As Shown Material:TPU Package Contents: 1 * tire Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.