This is my favorite top from ON, maybe ever. The material is soft and flexible and has a luxe feel. However, it must be washed on delicates with other stretchy / spandex materials only and hang dried. Do not wear it under a Sherpa jacket, a flannel, a cotton sweatshirt or anything that sheds lint. T...hose coarser materials stick to and pill the threads of this soft and fragile fabric. It snags easily and attracts lint. Even my dry hands have snagged a few fibers. Sleek, synthetic materials over top - such as a puffer vest or coat, are your best bet. It's a high maintenance top to care for, which isn't ideal. But, it feels and looks great. Love the neckline and the snug, cropped fit. It's so very comfy. I've purchased two; one dark green and one burgundy. I'm 5'3", 130 lbs and purchased size medium. I should have purchased my normal size small, but the medium fits just fine. It's a bit looser in the shoulders, arms and stomach, but nothing too noticeable. It is still quite a snug fit.