Personalized Royal Bioengineer Long Sleeve Creeper. Bio Engineer text wearing a crown is a humorous bioengineering design. Tickle the funny bone of your favorite bioengineering king or queen at 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.