Personalized My Great Grandpa is Awesome Grandkid Youth T-Shirt. My Great Grandpa Is Awesome Youth T-Shirt - White has cute design with colorful lettering for great grandkids. 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.