This is a beautiful fabric in a blend of 92% viscose and 8% spandex. It's just the right weight, not too thin and not too thick by Eileen Fisher. The quality of her clothes is exceptional. This is 20 inches pit to pit, about 24 inches long in the front and 25 inches in the back. I've worn it tucked and untucked. It's perfect under a jacket or worn alone. Very versatile. Excellent condition. See my other items too for bundling!