This is a rib knit top from HIROKO KOSHINO premier (Hiroko Koshino Premier). The Premier label is a high-class item within the HIROKO KOSHINO brand. Size 38, which is roughly a women's M size. The knit is ribbed, so it has excellent elasticity. It fit comfortably on a wearer who is 164cm tall. It cost approximately 60,000 yen at a Ginza shop. It was worn about 3 times for stage greetings and parties, so the condition is good, and I think it's a great deal.