If You Mustache I'm One - Birthday, Anniversary T-Shirt All Child T-shirts are a 100% Cotton (Light Gray is a 90/10 cotton/polyester blend) which is super soft, and will provide a comfortable fit and feel Available in popular sizes and a plethora of colors to give you the utmost in selection Exclusive Haase Unlimited design printed with the latest in apparel printing technology to ensure years of wash and wear Proudly designed, printed and shipped from the United States For best results and to maximize durability machine wash cold, inside out and tumble dry on low heat