X1 Knee Supporter. A set of 2 is also sold on a separate page, but there are several available, so the quantity can be changed according to your needs. Black M size knee supporter, providing comfortable support. - Model Name: X1 Knee Supporter - Size: M - Color: Black - Application: Knee Supporter New and unused, but it is stored by an individual, so please refrain from purchasing if you are nervous or seeking perfection. Please understand this before purchasing. If you have any concerns, please consult us in the comments before purchasing.