Grandpa Shirt (Worlds Greatest) Fathers Day 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 Grandparents gift idea apparel clothing Lightweight, Classic fit, TearAway label, Double-needle sleeve and bottom hem Our vintage retro grandfather design T shirts make great gifts for grandpa or a grandpa to be 4.5 oz 100% Combed Ringspun Cotton, machine wash cold with like colors, dry low heat