Tommyco GEL707 Injected GEL Knee Pads With Snap On/Off All Terrain Cover Nylon Cloth with EVA+pu foam and injected gel Imported Made with 100 percent injected GEL and PU foam . Patented cover suspends knee redirecting pressure away from delicate patella bone Solid webbed bottom strap and elastic upper strap secure the kneepads in place Cover snaps on and off to create a two in one Kneepad Lightweight quality as well as All Terrain kneepad .