The Fitness Explorer: Be Strong Be Useful T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 58% Cotton, 42% Polyester Imported Machine wash cold with like colors, dry low heat Official The Fitness Explorer T-Shirt. High Quality. Made in USA. Sweatshop Free. Wash inside out. Cool iron on reverse side of garment. This premium t-shirt is made of lightweight fine jersey fabric Fit: Slim (consider ordering a larger size for a looser fit)