Personalized Intelligent Trombone Rough Text Newborn Layette. Trombone, the instrument for intelligent people in rough text is a funny low brass design with attitude for back to school, birthdays, holidays, marching band and graduation. 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