Brian Lopes used to make his own knee guard by hand. Now he has the Troy Lee Designs Lopes Signature Knee Guard, and you can have it too. This knee guard consists of an inner neoprene sleeve and an outer, custom molded polycarbonate shell backed by ventilated foam. The comfortable inner sleeve attaches to the durable outer shell with hook and loop closure, ensuring the perfect fit that stays in position no matter how hard you ride.