• 100% cotton • Sport Grey is 90% cotton, 10% polyester • Ash Grey is 99% cotton, 1% polyester • Heather colors are 50% cotton, 50% polyester • Fabric weight: 5.0–5.3 oz/yd² (170-180 g/m²) • Open-end yarn • Tubular fabric • Taped neck and shoulders • Double seam at sleeves and bottom hem 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!