Personalized Future Scientist Chemist Chem Teacher Toddler Long Sleeve T-Shirt. Colorful test tubes are bubbling and boiling on this fun Future Scientist Toddler Long Sleeve Tee - White for kids who want to make science or chemistry their profession. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.