Very warm and thick material sweatshirt, but it does fit smaller than expected.  I ordered a small, since I normally wear this size in UA tops, but the fit is snug - to the point that if you're planning on layering underneath this top, you'll be disappointed.  Even my long sleeve t-shirt is a bit of a tight fit underneath this top.  Otherwise, it's high quality and nice and thick, enough to wear outside in the Fall/early Winter.