1. Black color and customizing design available.
2. It is BASF 64D Polyethylene which is the same as passenger air plane wheels and they are 3 times as durable as most other materials.
3. The material beneath the plastic slider is genuine 1.2mm thick cow hide;, the 1.2mm cow hide is more than strong enough for the life period of the knee slider; They are stitched with the Velcro,in addition to super strong glue.
4. Small quantity and customers package is acceptable.