NEW FROM CARHARTT. The Men's Sweater Knit Quarter Zip. It resembles a sweater on the outside but is soft, smooth, and comfortable on the inside. Made of 9.5 ounce, 100% cotton flat back rib knit fabric, it has a rib knit quarter zip collar and cuffs for comfort and self fabric patches at the elbows for reinforcement and durability. Enhance its appearance by wearing a Carhartt t-shirt underneath.