Tynor Knee Cap Air (Open Patella) is a compression sleeve to hold and compress knee muscles, to enhance theperformance of players by increasing muscle density and blood circulation around the knee during sports, gyming andtraining. It also provides strong support and protection to ligaments and tendons thereby reduces the chances of wearand tear that can happen from workouts. The anatomical patellar ring holds patella in place during running and otherhigh impact sports.