Personalized Intelligent Trombone Long Sleeve Creeper. Trombone, the instrument for intelligent people is a humorous design for musicians, students and teachers of trombone. Fun gifts for back to school, birthdays, holidays and graduation. For chillier weather, dress baby in this soft long sleeve creeper in a great fitting 1x1 baby rib. 5.0 oz., 100% combed ringspun cotton, 1x1 baby rib. White is sewn with 100% cotton thread, Flatlock seams, Double-needle stitched rib binding on neck, shoulders, sleeves and leg openings,Reinforced three-snap closure on binding.