Feature: Ultra-light, puncture-proof and explosion-proof. Protect your inner tube and prolong the life of your tire. Made of high-quality materials, it is and strong in pressure resistance. Specification: Product Name: Bicycle high pressure anti-puncture tire pad Material: PVC (stretchable, elastic enough) model: Mountain bike (24*20mm or 26*20mm; 27.5*18mm 29*20mm) Road car, dead speed car (700C*18mm) Folding bikes,, etc. (20*18mm; 22 (451mm)*18mm) color: red Function: Used between the steel ring and the inner tube to prevent the spoke from piercing the inner tube; It can make the tire pressure higher, the tire resistance smaller, and more effectively prevent tire blowouts. Package Included: 2pc bicycle inner tube liner Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Superior quality - This accessory parts, made of durable materials, are durable and not easy to wear or damage, ensuring long-term stable cleaning results and long-lasting service life. Easy to Install - The installation is simple, and the accessory is easy to install and replace. Fine Manufacturing - Precise processing and adjustment ensure that each parts are consistent, improving the machine. Well design - User friendly design allow you to quickly install them onto yours, ensuring a secure fit and saving valuable time during maintenance. Excellent After Sales Service - We focus on quality and after-sales service. If you are dissatisfied with our products, please let us know. We promise to give you 186% satisfactory after-sales service. No risk. Don't hesitate. Just buy it.