Thank you for viewing. I bought this yesterday, but I made a mistake with the size... Unfortunately, it's not exchangeable, so I'm hoping someone might be interested. M size arm supporter that reduces stress on the elbow through padding. Also suitable for supporting those who play sports such as golf and tennis. - Brand: ZAMST - Size: M - Features: Reduces stress on the elbow through padding - Color: Black Retail price: 2970 yen Although it is new and unused, please understand that it has been in someone else's hands before purchasing.