Personalized Mermaid 3rd Birthday Toddler Full Zip Hooded Jacket. Mermaid 3rd birthday! A cute little mermaid celebrates your third birthday with her fish friends. Cute gift for the three year old. 7.5 oz., 60/40 cotton/polyester. Jersey-lined double-needle hemmed hood. Pouch pockets for all their treasures. Coverstitched shoulders and armholes. Coverstitched rib waistband and cuffs.