This 6.75-ounce 100% cotton jersey knit T makes for perfect workwear when it's cool or for layering when it's cold. The collar is a rib knit crewneck. The cuffs are rib knit too -- great for keeping cold out or staying put wherever you bunch them up the arm. Side-seamed construction minimizes twisting and maximizes comfort and ease of movement. The shirt is finished off with a handy left chest pocket that proudly sports the Carhartt 'C.' Ash fibber contains 99% cotton and 1% polyester. Heather Gray fiber contains 90% cotton and 10% polyester.For over 115 years, Carhartt has manufactured premium workwear known for exceptional durability, comfort, quality of construction, and fit that you can feel in the fabrics and see in the performance.