4.5 oz./yd (US), 7.5 oz./L yd (CA), 100% preshrunk ring-spun cotton jersey, 30 singles. Heather Grey is 90/10 cotton/polyester. Modern fit. Narrow, set in 1x1 rib collar. Self-fabric shoulder to shoulder neck tape for added comfort. Double-needle sleeve and bottom hem. Tear away label. Threadfast is a proud member of the Better Cotton Initiative (BCI). Cotton products from Threadfast support more sustainable cotton farming. Better Cotton is sourced via a system of mass balance. Every Threadfast product contributes to the Plant with Threadfast program.