100% Cotton STANDARD FIT – By far our best-selling adult short sleeve tee. This is a standard fit that hangs loosely off the body. Durable, heavy-weight fabric (5-6 oz). ATHLETIC FIT – Our adult athletic short sleeve tee features softer fabric with a more fitted look. This is our go-to pick for those looking for an extra dash of style in a lightweight fabric. Soft, yet durable lightweight fabric (4.3 oz). Solid colors: 100% Cotton, Athletic Heather: 90% Cotton / 10% Polyester, all other Heathers Cotton/Polyester blend Machine washable, printed in the USA. Click on the Teelocity link above the item name to see more styles!