No size tag, but based on the actual measurements, it's likely equivalent to a size S to M. Please refer to the images for the material. The color is black. This is a long dress/one-piece made from silk jersey, which has a lovely, smooth texture. It features a back zipper. There is some aging on the belt hardware. There are slight stains on the collar, cuffs, and hem trim. There is a faint, whitish stain about 20cm below the waist (very subtle). However, they are not very noticeable, so it's still a lovely item that you can wear. Length: 118cm, Shoulder width: 36cm, Bust: 39.5cm, Sleeve length: 57.5cm I have many other items for sale. #HAWAII☆彡_CLOSET Please take a look!