Personalized 1st Birthday Submarine Toddler Hoodie. Cute 1st Birthday Submarine Toddler Hoodie - Red has number 1 on the porthole for your child's undersea party. 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.