Unused ALTA INDUSTRIES, a US manufacturer of elbow and knee protectors for industrial, military, and sports use. The "Alta FLEX" is equipped with a long, hard pad that supports weight over a wide area. It is worn on the lower part of the knee, which comes into contact with the ground when the knee is bent. The straps are made of non-stretch nylon material for secure fastening on the lower part. The upper straps are made of elastic material to prevent over-tightening of the legs. Wide straps are also used to prevent slack. They fit securely and provide a comfortable fit. The straps are secured with the unique button hook "AltaLOK" for easy attachment and detachment. It is easy to put on and take off, yet difficult to come loose. The ends of the straps are equipped with the unique "Strap KEEPER" to prevent flapping. The hard pad is fixed with brass grommets. The soft cushion and resin protector protect the knee. [50413] This is the purchase page for "ALTA Knee Pads AltaFLEX Protectors Set of Left and Right 50413 [Black]". ■Product Specifications Size (length x width): approx. 23 x 17cm, Weight: approx. 350g, Material: Cordura nylon, neoprene foam pad