I'm a Dad what's your Superpower ? Muscle Dad Son Gym 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 Available in Men's Women's & Youth in Multiple Sizes and Multiple Colors Daddy Farter Worlds Best Ninja Superhero Papa Grampy Pop Pop Pa Dad Superdad Gym Rat Beast This premium t-shirt is made of lightweight fine jersey fabric Fit: Slim (consider ordering a larger size for a looser fit)