Personalized Triangle Tiangles Newborn Layette. Triangle text with a percussion triangle replacing the letter A and surrounded by triangles is a unique music gift design for percussion musicians. 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