Keep Calm and Party Naked Asst Colors T-shirt/tee Party on, excellent! 100% Cotton ("Heather" and "Safety" colors are 50/50 cotton/polyester. "Antique" and "Sport" colors are 90/10 cotton/polyester, Ash Grey is 99/1 cotton polyester,) Machine washable Pre-shrunk Design may appear smaller, or larger depending on size purchased. Printed In San Luis Obispo, CA