and performance: Our inner tubes are made with thicker butyl rubber for extra durability Provides superior puncture resistance, shock absorption and a smoother ride than standard natural rubber innertubes The thick butyl rubber absorbs impacts and you 't feel the bumps and dents as your bike glides over them, protecting you from the shocks. Quick and Easy Installation: With our inner tube kit, you can be back on the road in no time. The inner tube is easy to change, allowing you to be up and running in less than 5 minutes. Better stretch and shock absorption for a smoother ride on all surfaces. Applicable models: 10x2/2.125/2.5 Colour:Black Material:Butyl rubber Package Contents: 2 x 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.