Silent and form fitting Stealthy durable neoprene outer shell with reinforced stitching throughout Shock absorbing 10mm foam, plus a second layer of polyurethane foam for max comfort The Imperial Neoprene Knee Pads provide a unique adjustment system allowing for a very secure fit. High-density closed-cell foam with the neoprene outer shell provides for its extremely comfortable and silent design. The increased grip and durability of these pads is provided by the Damascus Trion-X textured non-slip grip surface technology. Sold as a pair. Silent and form fitting. Multiple adjustable elastic straps and Velcro closures for secure fit for various arm girths