Frank Bee Multi-Purpose Gel Insert Knee Pads offer ultimate protection and comfort for military, tactical, or outdoor use. The knee pads feature a rubber and silica gel insert which braces any impact the knee takes. The knee pads come with a single neoprene strap with a hook and loop closure. Includes a hard PVC Cap. WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects and other reproductive harm.