The Pro-Tec Knee Patellar Tendon Strap is made of neoprene with tubing inside the strap to provide gentle compression. The strap is designed to help alleviate the symptoms of tendinitis, chondromalacia, Osgood-Schlatter's Disease and other knee ailments and provide compression on the patellar tendon to reduce discomfort and irritation. Adjustable design. Pro-Tec Knee Patellar Tendon Strap Black, X-Large - Sport Medicine And Accessories at Academy Sports