For -compartment OA patient; mild to moderate OA knee user Help to support the knee joint and share the loading of affected joint Light weight and superior fit; One size fits most users and allows ergono for unilateral compartment OA knee users Valgus and varus adjustment to fit individual's alignment Usage Designed for reducing knee pain caused by unicompartmental osteoarthritis of the knee and often helps delay the need for surgery. The unloading / offloader one is a low-profile brace with 3 points of leverage for reducing pressure inside the knee joint. It's universal; fitting a wide variety of patients easily. The strapping system allows for full adjustment, but also features quick snaps for quick and easy application. Universal - Lateral: Left Colour:Black and White Material:Breathable non-slip material Package Contents: 4 x protector 4 x adjustment piece 4 x small wrench 4 x screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.