4.5 oz., 60% ringspun cotton, 40% post-consumer recycled polyester, 30 singles; Preshrunk fabric;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; More Sustainable Cotton: Threadfast is a proud member of Better Cotton. 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;