K124 - M MW Crewneck Sweatshirt Carhartt's midweight crewneck sweatshirt comes in a 10.5-ounce, midweight blend of 50% and 50% polyester fleece. To seal out the cold and lock in the warmth, it features stretchable spandex rib-knit cuffs and waistband. Heather Gray fiber content is 70% cotton/ 30% polyester. *10.5-ounce, 50% cotton/50% polyester fabric, midweight *Rib-knit cuffs and waist band *V-patch front neck