This is a halter bikini purchased at Marui. It has underwire for a good hold and is designed to be flattering. It is equivalent to a size M. I purchased it for about 18,000 yen. It has only been used for a few hours, twice, and is in beautiful condition. One of the decorative strings on the bottoms is missing, but it doesn't affect wear. It's also fine to remove the other one. MARUKWA Swimsuit Bikini Marui