"There's something about the speed of light; It's just hard to get around." -Seymour Cray, designer of the Cray-1 Supercomputer. • 100% combed ring-spun cotton • Heather Gray is 90% cotton, 10% polyester • Fabric weight: 4.3 oz./yd.² (145 g/m²) • Yarn diameter: 32 singles • Side-seamed construction • Regular fit • Crew neck • 1 × 1 baby rib binding on the neckline and sleeves • Blank product sourced from Nicaragua Note: Currently, this shirt is only available for US Shipping. Note: This product is printed on demand for you when you place an order. It will ship separately from other items in your order. Fulfillment time is between 2-5 business days and shipping time is estimated between 4-21 business days.