Mens Dads knows a lot grandpa knows everything Fathers day gifts 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 Fathers day gifts for grandpa which you can use every day are hard to find. However a Dads knows a lot grandpas know more t shirt by Awesome Printable Art makes an awesome gift for any grandpa at any time of the year. Gifts for grandpa from grandson or granddaughter. This unique Dad knows a lot grandpas know more t shirt by Awesome Printable Art makes a perfect father's day gift as every grandpa wears a t-shirt at some stage so it has a real use value. Lightweight, Classic fit, Double-needle sleeve and bottom hem