Button up shirt with two shirt pockets and buttons to keep sleeves rolled up. Size is not marked, but I would say it will fit a M/L oversized, an XL loose, and an XXL about right. To tell you the truth, I can’t decide if the stripes are grey or black or navy. I THINK grey. Lol nonetheless, it is super cute and comfortable whether you want it for work or as an oversized swim coverup!