This is a sleeveless top made of a thin, swimsuit-like material, often called a "swim jersey." It's stain-resistant and opaque, yet has a smooth, cool feel, making it perfect for summer. The size has a relaxed fit, so although it's labeled as a size S, I think it would also fit a size M. There are a few places where it has snags, but they are not noticeable because the top is black. I hope that those who understand that this is a used item will purchase it. - Brand: STUNNING LURE - Size: S - Color: Black