It can be used as sportswear for practice or as a uniform for matches. Although it is a size S, the length is long, so I think people who usually wear a size M can wear it without any problems. I wore it a few times for tennis matches, and there are no visible major stains. However, as shown in photos 5 and 6, there are some loose threads on the back where a bib was attached during matches. Also, as shown in photo 7, there is a slight white stain on the collar, but it's a minor stain and I didn't find it bothersome. Since it was only used a few times, the shirt itself is hardly stretched out. If you have any questions about this product, please feel free to leave a message in the comments section. Sleeves: Short sleeves Size: S Type: Practice wear