4.3 oz./yd², 100% combed ring-spun USA premium cotton fine jersey, 30 singles; Heather Grey is 90/10 combed ring-spun USA premium cotton/polyester; Reactive-dyed, dischargeable; Pre-washed to minimize shrinkage; Ribbed crewneck collar; Taped neck and shoulders; Side seams; Double-needle 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; ;