Who has the greatest Grandpa in the world? You do! He will love this personalized grandpa shirt that comes with all his grandchildren's names. It can hold up to 18 names so there is plenty of room to list everyone. This personalized grandpa t-shirt would make a great gift for his birthday, father's day, grandparent's day or just to surprise him. Guaranteed to make him smile. T-shirt is a navy 100% cotton tee and available in adult sizes S-3XL.