Organic cotton lycra. Draping upper top, and fitted waist with short spacious sleeves. The neck and top of the sleeves are a zipper, so one can drape it off the shoulders, or tighten it up for security and coziness. There are also 2 zipper pockets on the front, if you look closely in the pictures you'll find them. An eloquent top, with an edge of industrial design, the brass zippers.