I purchased this from ZOZOTOWN 2-3 weeks ago. It's size 130 (waist 53-59cm). I opened the package once, but I haven't tried it on. This Champion product is a genuine Japanese-market item. (From the website below) These are 2P (2-pack) boxer briefs made with a high cotton content fabric that is gentle on the skin and treated with "C ODORLESS(R)" (See Odorless) antibacterial and odor-resistant processing. They feature a comfortable fit due to their excellent stretch. Open front design. 95% cotton, 5% polyurethane