Personalized T-Rex Dinosaur 3rd Birthday Toddler Full Zip Hooded Jacket. A grumpy, purple T-Rex wearing a birthday hat sits and eats a birthday cupcake. Cute 3rd birthday gift for your little 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.