Product Name: THROW MAX Throw Max (For Left-Handed Pitchers, Medium, Size M) I accidentally purchased the wrong side and have kept it at home unused. I found it while decluttering, so I'm putting it up for sale. The MFT Throw Max (TH) is a training aid that supports the way you use your arm when pitching. It helps you be aware of the correct form and is used for pitching practice in baseball, etc. It has a Velcro closure for easy attachment. For left-handed pitchers, size M. *Although unused, it has been stored at home, so please purchase only if you understand this. *Instant purchase is OK. [Quoted from Amazon product description] Size (Suitable Height): M (159~174cm) Weight: Approximately 100g (Size M) Country of Origin: USA