This is a set of two X1 knee supporters. One piece is also sold on a separate page, but since there are several, the quantity for sale can be changed according to your needs. Black knee supporters in size S, providing comfortable support. - Model Name: X1 Knee Supporter - Size: S - Color: Black - Application: Knee supporter Although new and unused, they are 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.