M-size supporter to reduce the strain under the kneecap. I bought it but never used it, and it has been stored. The box has been opened. There is a mark on the box where the price tag was removed. Please understand that this is a used item before purchasing. *I will ship it without the box. - Brand: ZAMST - Model Name: JK Band - Size: M - Features: Reduces the strain under the kneecap Thank you for viewing. 36-42 cm (Measure 5cm below the center of the kneecap) #ZAMST #JKBand