Personalized Chemist In Training Childs Toddler Hoodie. Cute chemist in training Toddler Hoodie - Heather has chemistry beaker design for a boy or girl wanting to be a chemistry teacher or a scientist when they grow up. The Toddler Pullover Fleece Hoodie keeps little ones cozy and comfortable through all their adventures. Made with soft fleece and a smooth jersey-lined hood, it’s perfect for layering on chilly days. Ribbed cuffs and waistband help hold in warmth while side seam pockets add a touch of practicality for busy toddlers on the go.