Personalized T-Rex Balloon Birthday Toddler Full Zip Hooded Jacket. A cute T-Rex dinosaur wearing a birthday hat has a balloon tied to its tail. It is singing and playing the guitar, wishing you a happy birthday! 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.