The Dead on Tools Gel Hard Cap Knee Pads feature a hard cap and are ideal for applications with hard surfaces like carpet, hard wood, sub floor, concrete, and general construction. The knee pads' mesh, moisture-wicking lining and neoprene/elastic straps give extra flexibility and support. These hard cap knee pads are ideal for swiveling or sliding and are designed with a 2 strap system for additional comfort. The strap system is comprised of a neoprene bottom strap that tightens firmly for support, and an elastic top strap that holds the pad in place without causing discomfort. Both straps on these knee pads are adjustable and attach with a hook and loop closure.