This is a Tencel pullover. The color is navy, but it's a dark navy, almost black. Size is 2. It's a French sleeve or sleeveless top. I wore it once, had it dry cleaned, and have been storing it at home. The back can be opened and closed with a zipper. There's a slight fraying at the bottom of the zipper, but it doesn't affect opening or closing. Please check the images. The original price was about 5,000 yen. Color: Black系 (Black-based)