Personalized Best Grandpas Have Mustaches Toddler T-Shirt. Toddler T-Shirt - White and Black with old time baseball style text that says THE BEST GRANDPAS HAVE MUSTACHE'S with a big handle bar mustache for the word MUSTACHE. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.