The Smith Scabs Derby Knee Pads are built especially with Derby in mind. We've engineered this pad to provide as much protection possible while keeping in mind the needs of Derby athletes. The shorter pad and flat knee cap both help to reduce bulk and increase mobility. The quick release system allows easy on and off. Now you can coordinate your pads to your outfit! And with a replaceable cap, you can further customize, or even simply replace the cap if the need should rise.