4.5 oz./yd², pre-shrunk 100% ring-spun USA cotton, 30 singles; Heather Grey is 90/10 ring-spun cotton/polyester; Slim fit; Reactive-dyed for longer lasting color; Self-fabric collar; Taped neck; Side seams; Double-needle stitching on sleeves and bottom hem; Tear away label; USMCA certified; This product meets the following Sustainable Style subcategories:Sustainable Manufacturing: This product meets the OEKO-TEX Standard 100Socially Conscious Manufacturing: This product was made in a facility that holds a SMETA audit certification