Navy polo shirt with YONEX's VERCOOL function. - Brand: YONEX - Size: M - Color: Navy/White/Blue - Function: VERCOOL Thank you for viewing. This was used as a uniform when my child was in junior high school, so there are hooks on the back for a bib. If you're not good at sewing buttons, please consider it o(^▽^)o I think the size was probably women's.