4.5 oz./yd², pre-shrunk 100% ring-spun USA cotton, 30 singles; Heather Grey is 90/10 ring-spun cotton/polyester; Other Heathers are 50/50 ring-spun cotton/polyester; Reactive-dyed for longer lasting color; Ribbed crewneck collar; Back neck tape; Shoulder-to-shoulder taping; Side seams for size 4XL; Double-needle stitching on bottom hem; 1x1 ribbed cuffs; 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;