I'm not very knowledgeable about suits, so please comment if you have any photos or information you'd like. I will answer as best as I can. It's not used very often. It's a reversible type, gray and black. It can be used in various situations such as entrance ceremonies, graduation ceremonies, weddings, and funerals. It's A6 size, so the size is set to M. I think it's suitable for people around 175cm tall. Thank you for looking.