Personalized 3rd Birthday T-Rex Toddler Full Zip Hooded Jacket. A grinning T-Rex dinosaur holds a birthday cupcake and wears a party hat to celebrate the three year old's 3rd 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.