• FITS MULTIPLE MOUNTAIN BIKESThis MTB Mountain bike tube is compatible with many tire sizes: 29'' x 1.9/2.0/2.1/2.2/2.3/2.4/2.5 Presta Valve 45mm
• TPU MATERIALMTB bike inner tubes are made of high-quality TPU material, and the special puncture-proof layer design can effectively prevent sharp objects from puncturing the carcass, providing higher safety and reliability
• ULTRALIGHTTPU bicycle inner tubes weigh only 63 grams, which is about 100 grams lighter than traditional butyl rubber inner tubes, reducing the burden on the bicycle, providing more sensitive acceleration and making riding easier
• COMPACT AND LIGHTWEIGHTBicycle tire inner tubes are compact, easy to store, and lightweight, making it convenient for you to carry with you; They take up very little space in your saddle bag
• REDUCE ROLLING RESISTANCEThe friction generated on the tire is very small, allowing for maximum speed and performance; Instantly add power to your ride and provide a smoother riding experience
• NOTEThe inner tube inflation pressure must not exceed 3 PSI before installation, otherwise it will deform or burst