This is the perfect gift idea shirt for grandpa from kids or grandchildren. Nice looking funny custom print that says "Grandpa Knows Everything, If He Doesn't, He Makes It Up". Everyone thinks their grandfather is smart because of years of experience. Our quality shirts are custom printed to order and not only look great but last a long time. - Quality brand. - Short Sleeve. - Crew neck collar. - 100% Preshrunk Cotton. - 5.3 oz. - Available in White, Gray, and Black. - Unisex Sizes. - All our shirts are custom printed to order. - In business since 1997.