This piece was bought at Lululemon sample sale so there is not a tag inside of it but you can see that it is branded on the photos. This is great for surfing swimming or dancing. Has hidden pockets for your keys if you need as well and along up string so you can get it on easily. Super flattering and highly recommend. Never worn ever! I’m not sure the exact size but I would say it’s definitely between a medium and a large, extremely well-made and you won’t find anywhere else!