POLY/COTTON Just like it sounds. A mixture of cotton and polyester, often 50/50 or 60/40. The added polyester makes the shirt softer, more durable, and less prone to shrinking. Bella+Canvas - BC3001CVC - Poly/Cotton Alternative Apparel - AA5050 - The Keeper Vintage 50/50 Tee Bella+Canvas - BC3650 - Poly/Cotton