100% Rib Cotton, combed for softness and comfort (Heather Grey contains 10% polyester) Wider, textured ribbing for more stretch and give 3/8" (1cm) Baby Rib binding for reinforced shape through repeated washings Durable double-stitched bottom hem.Similar to the 2x1 Rib Boy Beater, but with a generous, daring neckline and added length. By American Apparel.