Personalized My Grandpa Loves Me Superhero Youth T-Shirt. My grandpa is a superhero! Adorable tee for your little ones who love their grandpa. Great for Father's Day! 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.