This is a black formalワンピース (one-piece) suit. It has a back zipper and 5-7分 (five to seven) length sleeves. The size is 5号 (Japanese size 5), and the brand is TISSE. It has been worn once and stored with a cover, so there is no fading or dust. The color in the photos doesn't quite capture the true color due to the lighting, but the actual color is a solid black.