Made of high quality elastic, anti-allergy fabric. Provides soft tissue support, increases blood circulation and provides soothing warmth, aids in reducing injury recovery time. You'll be able to enjoy exceptional knee support while still maintaining your peak performance and full range of leg motion! Impoved Knee Performance, Additional strengthening occurs in this all-around knee support by applying pressure on the tendon above the kneecap, reducing forces of the quadriceps on the patella tendon and erosion of the under surface of the kneecap Adjustable hook and loop system, streachable high performance elastic fabric offer strong support and stabilization for the surrounding muscles of knee and joints.