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 M-size knee supporters provide comfortable support. - Model Name: X1 Knee Supporter - Size: M - Color: Black - Application: Knee supporter Although new and unused, these items are stored by an individual, so please refrain from purchasing if you are sensitive to such matters or if you are seeking perfection. Please understand this before purchasing. If you have any concerns, please consult us in the comments before purchasing.