4.5 oz., 100% preshrunk ringspun cotton jersey, 30 singles; Heather Grey: 90% cotton, 10% polyester; Made from sustainably sourced us grown cotton;Narrow, set in 1×1 rib collar; Self fabric shoulder to shoulder neck tape for added comfort; Double-needle sleeve and bottom hem; Tear-away label; Modern fit; Our 100% cotton Epic Jersey fabric is crafted from U.S. Grown Cotton, produced using best practices to conserve resources, protect soil, and promote biodiversity.; Every Threadfast product contributes to the Plant with Threadfast program;