Mueller Max Knee Strap (OSFM) Sports Medicine : This lightweight and comfortable support provides targeted compression from dual straps above and below the knee cap without reducing your mobility. Helps relieve pain associated with soreness, stiffness, arthritis, bursitis, patellar tendonitis, chondromalacia and more. Lower compression tube targets the patellar tendon. Upper compression tube targets quadriceps misalignment to help improve patellar tracking. Compression tubes on each side assist patellar tracking. Breathable mesh fabric in back for a soft, comfortable fit.