Like 12 ounces of sweat - the warmth of this item is only slightly warmer than the thinner Champion 1780. It's durable but not obtrusive and has minimal run after wash a 60°C and returns to its normal size when worn. So I advise you to order your actual size. Own different colors, these are all good basics, but not flashy. At around $10 a very reasonable purchase that I use as layers daily during the winter. Well made bases with no flaws or weak points that last a long time. Timeless style. To wear without a turtleneck top, the neckline of this sweater is too big, you can see the undershirt.