Personalized Penguin Dude Newborn Layette. Penguins are adorable marine birds of the Antarctic. This penguin dude definitely is proudly strutting his stuff. A fun gift design for birthdays and holidays. 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