Personalized Worlds Best Trombone Player Long Sleeve Creeper. Cool trombone player gift has Worlds Best trombone saying in two tone sports style design and comes on this fun trombone Long Sleeve Creeper - White gift for your trombonist in marching band or jazz groups. 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.