Personalized Dirt Biker Vintage Superior Newborn Layette. Dirt Biker Newborn Layette - Heather gift has a vintage crown logo with Superior Dirt Biker retro slogan. 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