G Form PRO X Knee Pads are flexible, lightweight, breathable, and machine washable. Our fully articulated design offers maximum protection centering on and surrounding your joint, with virtually no bulk. The knee pads can be worn in warm or cold weather, on top of or underneath clothing. It can be washed and worn repeatedly, and is covered by a limited lifetime warranty. The unique way the pad is shaped and molded, plus its attachment to the compression fabric, keeps the pad close to the surface of the body, and this enhances the protection, especially compared to hard shell pads that can move out of place.