From the Good Smile Company website:
From the popular anime series "Girls und Panzer" comes a figure of the Ankou Team captain Miho Nishizumi dressed up in a yukata. The yukata gives her a slightly more mature look compared to her normal school uniform and panzer suit - a look that fans are sure to enjoy! Yukari Akiyama: Yukata Ver. is also on her way to display beside Miho and bring a whole new charm to the Girls und Panzer world!