Premium material-High quality rubber ingredients are used The good air tightness enables the inner tube to be used continuously and stably. The various ingredients added in the inner tube more solid, and wear-resistant, explosion proof, shock reduction. Easy to install-Before installation, fill the inner tube and put it into water. Check whether there are in the water to good air tightness of the inner tube. Better Performance:Butyl Rubber Better Shock Absorption Butyl adds to more stretch, shock absorption, impact and puncture resistance for a smoother ride.Our butyl rubber inner tubes are softer than ordinary rubber inner tubes of competitors They offer better shock and vibration absorption performance for a much smoother ride Colour:Black Material:rubber Package Contents: 1x Mountain Bike 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. Premium material-High quality rubber ingredients are used The various ingredients added in the inner tube more solid, and wear-, explosion proof, shock reduction. The good air tightness enables the inner tube to be used continuously and stably. Better Performance:Butyl Rubber Better Shock Absorption Butyl adds to more stretch, shock absorption, impact and puncture resistance for a smoother ride.Our butyl rubber inner tubes are softer than ordinary rubber inner tubes of competitors Easy to install-Before installation, fill the inner tube and put it into water. Check whether there are in the water to good air tightness of the inner tube.