4.5-ounce, 100% ring spun US cotton 90/10 ring spun cotton/polyester (Sport Grey) 65/35 polyester/ring spun cotton (Dark Heather, Heather Navy, Heather Royal) Non-dyed fabric with visible specks of fibers and cotton seeds (Natural) Seamless double-needle 3/4′ neck Taped neck and shoulders Recycled, high-performing black tear-away label Modern classic fit, seamless body (Side seam on size XS) Double-needle sleeves and hem