Our best-selling and most cost-effective t-shirt. The Gildan Ultra Cotton Tee is a standard t-shirt, made of great quality 100% pre-shrunk cotton. It’s available in a wide variety of colors so you should be able to find exactly what you’re looking for! *Heather and safety colors are 50/50 cotton/poly blend. Antique colors and Sports Grey are 90/10 blend. Ash Grey is a 99/1 blend.