Personalized Submarine 5th Birthday Toddler Sweatshirt. THINGS ARE LOOKING UP 5th birthday Toddler Sweatshirt - Pink with big number 5, colorful submarine, little deep sea explorer in the porthole and bright fish with bubbles. Keep your little one cozy and stylish with this soft and durable toddler sweatshirt. Designed for comfort and ease of movement, it features a classic fit with ribbed cuffs and hem for added warmth. Perfect for everyday wear, playtime, or chilly outings, this sweatshirt is made to withstand the adventures of an active toddler