I believe this was sold as an insulated "sweater" by Marmot when I bought it about 9 years ago. It is a 3/4 zip polyfill pullover with a quilted top and then less fill around the hips so it fits nicely under a shell. It has vented pits to help with wicking. I used it as a great mid-layer under a wind/rain shell in cold temps. Kept me really warm and unlike down, still insulated even when wet. Also just a nice, stylish 3/4 zip pullover with jeans. It is in very good condition, pretty much like new. It has not been worn in many years due to my moving to a warmer climate. It still has many good years left to keep someone warm!