Personalized Scientist Kids Chemistry Beakers Long Sleeve Creeper. Test Tube Science Experiment Long Sleeve Creeper - White gift for boys and girls. Bubbling secret formulas for the future researcher, scientist, lab technician or science teacher. 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.