Simple design sleeveless shirt with buttons and a round neck. It's dark navy. - Brand: Paul Stuart - Design: Sleeveless, with buttons - Collar: Round neck - Style: Simple Size 6, so I think it's S to M. I bought it about 5 years ago at the Omotesando store and wore it a few times, then stored it at home. The buttons have a three-dimensional design, and it looks great with a jacket or a cardigan. I will fold it up small for shipping. Thank you for looking.