Personalized Trombone Music Joke Band Newborn Layette. Trombone The Only Instrument That Matters Newborn Layette - White gift for the trombonist. graphic from graphicsfactory 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