Personalized Coolest Uncle Ever Toddler T-Shirt. Coolest Uncle ever! Who's the best Uncle? This Man! Two thumbs up for this aunt. Funny shirt for your favorite Uncle! 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.