1.Advance in bicycle inner tubes - as the fastest rolling, the most , and the lightest weight. It also appears to be more sustainable as it requires less raw material and is readily recyclable. 2.High-Strength: It offers durability and wear resistance, extending its lifespan for different road conditions. 3.Fastest Speed: With superior rolling resistance compared to butyl and latex inner tubes, it entices a faster and more exhilarating ride. 4.Safe and not easy to burst: The special TPU material has excellent resistance to puncture.Seamless construction, with a mold-cured vulcanization, to uniform roundness and give a smooth ride and handling. 5.This inner tube cannot be inflated a lot when it is not installed in the outer tire, otherwise it cause irreversible damage! Please use a manual air pump instead of high-speed air filling equipment such as air compressors or pumps. Specification:42g Color: As Shown Material: TPU Size:26inch 27.5inch Package Contents: 1 x TPU Inner Tube 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.