Personalized Tool Box Best Grandpa Newborn Layette. Father's Day Newborn Layette - White for grandpas and papas with a box of tools says BEST GRANDPA IN THE WORLD. Perfect for handy grandpas. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months