• 100% ring-spun cotton • Sport Grey is 90% ring-spun cotton, 10% polyester • Dark Heather is 65% polyester, 35% cotton • 4.5 oz/yd² (153 g/m²) • Shoulder-to-shoulder taping • Quarter-turned to avoid crease down the center This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!