The Gildan 5000 heavy Cotton T-Shirt has a higher stitch density than lighter weight T-shirts, but still offers the comfort that comes with the 100% preshrunk cotton shirt. Double-needle stitching throughout Heavy cotton short sleeve unisex t-shirt. Seamless rib at neck Taped shoulder-to-shoulder Sport Grey is 90% cotton, 10% polyester Ash is 99% cotton, 1% polyester