Personalized 4th Birthday Fire Truck Toddler Full Zip Hooded Jacket. 4th Birthday Fire Truck - This cute fire engine is wearing a firefighter helmet and bringing in a big red four for your fourth 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.