• 100% ring-spun cotton • Sport Grey is 90% ring-spun cotton, 10% polyester • Dark Heather & Heather colors are 65% polyester, 35% cotton • Graphite Heather is 50% polyester, 50% cotton • 4.5 oz/yd² (153 g/m²) • Shoulder-to-shoulder taping • Quarter-turned to avoid crease down the center