Knee support. One leg. Universal for left and right. Suitable for light compression and protection of the knee. I tried it on once after purchasing it at the store, but the size didn't fit, so I bought a new one and am selling this one. It has been washed after trying it on. It's only been tried on, but it's a used item. Please consider purchasing only if you understand this. - Brand: ZAMST - Model Name: Bodymate - Size: M - Material: Nylon, Polyurethane - Application: Knee support - Features: For sports, comfortable fit