The Non-Marring Semi-Hinged Knee Pads from Klein Tools are designed for all-day comfort and protection for the toughest jobs. Designed with a non-marring shell material which is perfect to prevent scarring and marking on finished surfaces. Heavy duty synthetic rubber kneecaps provide ultimate protection while allowing for side-to-side mobility. The top strap is positioned above the knee to keep the pad centered in place. The multi-layer gel-like padding system is designed to support the knees and to reduce pressure and fatigue after all-day wear. Quick-release clips and adjustable elastic straps allow for easy on/off.