Knit-style collarless jacket featuring black trim. - Color: Gray系 (Gray-based) - Design: Collarless - Pockets: Yes - Decoration: Black trim - Material: Knit-style It doesn't have buttons. It fastens with hooks, as shown in the fourth photo. It can also be worn open. Also, because it's a knit material, it's not constricting, and I think it can be worn both on and off duty! I'm selling it because I don't think I'll wear it anymore. I wore it once the year before last. It has been washed and is clean. Thank you for looking.