This kids tee features the slogan \"Dad knows a lot, but Grandpa knows everything\". When you get to be Grandpa\'s age, you know just about all there is to know and now your little one will be able to remind eveyone of that with this great t-shirt! Or if you are a Grandpa yourself then what better present could there be for your grandchild than one that reminds everyone how clever you are! This is a 100% cotton kids tee. Sustainability Message All 8Ball Originals garments are WRAP certified, REACH compliant and Fair Labor Association accredited. They are printed in UK using Oeka-Tex and GOTS certified water-based inks.