Knee support made of stretchy urethane material. Features adjustable straps for improved fit. - Type: Knee support - Material: Nylon, Urethane - Adjustment: Adjustable with straps - Design: Stretchy - Color: Black - Size: 4L Thank you for viewing. This is a knee support that I used for about two weeks after injuring my left knee ligament while skiing. I have fully recovered, so I would like to offer it for sale. I purchased it from an orthotics company through the hospital for 15,613 yen. Please consider that this is a used item.