4.5 oz./yd², 100% combed ring-spun cotton, 30 singles Heather is 90/10 combed ring-spun cotton/polyester Granite Heather & Vintage Smoke are 60/40 combed ring-spun cotton/polyester White is sewn with 100% cotton thread Topstitched ribbed V-neck collar Self-fabric back neck tape Side seams Double-needle stitched sleeves and bottom hem EasyTear™ label This product meets the following Sustainable Style subcategory - Socially Conscious Manufacturing - This product was made in a facility that is WRAP certified