Personalized Trombone Rocks Long Sleeve Creeper. Cute Trombone Rocks Long Sleeve Creeper - White has a cool butterfly logo for the trombonist in band, jazz band and orchestral groups. Get matching trombone gifts for your music section. 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.