Construction Hats for Kids - Engineer Helmets for Kids , Construction Hard Hat - Dress Up Hats by Funny Party Hats Child size hat measures, 4 inches tall x 7 1/2 inches wide x 10 inches long. Made of plastic, has little engineer stamped on the hat. Let your child's imagination soar with a dress up game. Realistic looking toy construction helmets will allow your child to dress up like the real thing. Whether you need hat for pretend play, dress up or to finish a costume this helmet fits the bill.