Premium T-Shirts We tried many fabric blends and fits until we found the ideal t-shirt. It's soft, lightweight with the just the the right amount of stretch. It fits right out of the package like a well-loved favorite with a tailored chest that drapes straight down beneath the arm holes. 100% combed and ring-spun cotton (Heather colors contain polyester) Ash color is 99% combed and ring-spun cotton, 1% polyester Heather colors are 52% combed and ring-spun cotton, 48% polyester Athletic and Black Heather are 90% combed and ring-spun cotton, 10% polyester Heather Prism colors are 99% combed and ring-spun cotton, 1% polyester Fabric weight: 4.2 oz (142 g/m2) Pre-shrunk fabric Shoulder-to-shoulder taping Side-seamed Size Guide Length (in inches) XS (27) S (28) M (29) L(30) XL(31) Width (in inches) XS (16½) S (18) M (20) L(22) XL(24)