Personalized Trombone Halloween Cobwebs White Text Long Sleeve Creeper. Trombone in cobweb text with the image of a trombone covered in cobwebs is a humorous Halloween gift design for low brass musicians, school music teachers and students in concert, jazz and marching band. 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.