This is a COS gray tiered design short-sleeved dress. I bought it a few years ago, but I've never worn it, so I'm selling it. The size is XS, but it's a large design, so it fit perfectly when I usually wear S-M size. There is one loose thread on the inside of the neckline (see photo 3). - Color: Gray - Design: Tiered design - Sleeves: Short sleeves Thank you for looking.