Personalized Best Poppi Ever Fathers Day grandpa Youth T-Shirt. Best Poppi Ever Youth T-Shirt - White gift for your grandpa has cool distressed lettering and stars logo on a birthday or Fathers Day gift for him. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.