I Am 350 Dog Years Old Funny 50th Birthday T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Perfect for any 50 year old dog lover Great birthday present for dog and animal lovers Lightweight, Classic fit, Double-needle sleeve and bottom hem