Personalized Birthday Stamp 21 Toddler Hoodie. 21st birthday Toddler Hoodie - Natural Heather with distressed canceled postage stamp with fun birthday cake and number 21. 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.