The ProFlex 360 Hard Shell Hinged Knee Pads feature an ergonomic hinge design that is built to keep protection comfortably in place whether walking, crawling or kneeling. The combination of a heavy-duty hard shell with a soft non-marring cap makes these pads versatile for protection on any indoor or outdoor surface—no matter how abrasive or delicate. Unlike other knee pads of this style on the market, the free-moving hinge design enables smooth and full 180-degree extension of