The Grip 30242 Hard Cap Knee Pads with thick foam padding are ideal for construction workers, carpenters and rescue workers to protect knees from abrasion. Quality made by Grip Tools, these knee pads feature hard polypropylene knee caps, comfortable foam padding, and adjustable straps with easy on, easy off fasteners. You don't have to be a professional carpenter or tile setter to enjoy the benefits of this knee saving product. They're an affordable and a smart purchase for the DIY home owner.