Personalized Firecracker 1st Birthday Long Sleeve Creeper. Cute Long Sleeve Creeper - White 4th of July 1st birthday design with a big blue number one firecracker filled with red and white stars and star burst. Perfect for 4th of July first birthdays! 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.