There is some wear and tear, but it's still usable. I usually wear a size M depending on the item, so I think it's better for you if you choose M size. From the following site: A layered style that can be completed with just one piece. With cups, it's a great piece for lessons or everyday wear. This top has a design that looks like a layered bustier with removable cups. It's sewn together, so it's easy to care for. The underbust part of the built-in bra has a wide elastic band to firmly support and hold the bust. It uses a material that has been treated with moisture-wicking and quick-drying properties, and feels refreshing on the skin. Perfect for lessons as well as everyday wear. It has a moderate cuteness that isn't too sweet, and is easy to match regardless of age.