This is a dress that came out this summer. It looks like denim, but it's made of cotton, so it's soft and comfortable to wear. The fabric isn't too thin, so I think you can wear it in the fall without any problems. The back has three buttons, and the length is adjustable. I'm 161cm tall, and when I make it the longest, it almost covers my ankles. Please see the 5th photo for the measurements (borrowed from the TreFac Style website).