Personalized 5th Birthday Mermaid Toddler Hoodie. Cute mermaid princess rides on her rainbow seahorse and surrounded by her fish friends. Happy birthday to the 5 year old on her 5th birthday. 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.