4.2 oz, 100% combed and ring-spun cottonAsh 99% combed and ring-spun cotton/1% polyester Athletic Heather 90% combed and ring-spun cotton/10% polyester All other Heather colors 52% combed and ring-spun cotton/48% polyester Triblend colors 3.8 oz, 50% polyester/25% combed and ring-spun cotton/25% rayon-40 singles 30 singles Rib knit cuffs Side-seamed Retail fit Sizes: S - 2X