UPGRADED DESIGN--- Overcome the defects of similar products, medical knee braces with no allergies and itchiness. Metal spring stabilizers on both sides and patella gel pad won't fall off easily during using. 3D structure of woven, high-precision knittingcutting technology. Ergonomic: with high-elastic breathable compression fabric to 360 fit tightly with your kneecap curve. Non-slip gel strips and high-elastic bandage to avoid slide or roll during exercise, It will stay in place all day INNOVATIVE TECHNOLOGY--- High-elastic compression fabric has the effect of keep knee warm and reduce stiffness, reducing inflammation and swelling, increase oxygen flow. This knee brace disperse the pressure and improves circulation around knee area,It will wrap around the patella to enhance the stability of kneecap and relax tendons, avoid pulling, prevent muscle strain. So it will prevent potential sports injuries without sacrificing your performance, PERFECT for pain relief and recovery COMFORTABLE EXPERIENCE--- We got a well balance between compression and comfort, premium knee brace will apply even compression for your joint, which will significantly relief knee pain. The air knit fabric can instantly absorb and evaporate lots of sweat,circular breathing. Breathable, fast-dry and lightweight. You can wear it under trousers and sleep with it, thicker than other knee protectors to provide extra reinforcement without sacrificing comfort, so you can wear them all day long Upper circumference 37cm, lower circumference 30cm