Personalized I have The Best Mom in The World with Speech Bubble Toddler T-Shirt. I have The Best Mom in The World Mothers Day Toddler T-Shirt - Black, the perfect Mother's Day or Birthday gift for your Son to show that he loves his Mom very much. 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.