One Queen or King of Hearts Hat. Each hat is made of acrylic velvet-covered foam rubber, and measures 8.5 inches at the tallest point. The inside of the hat measures 22 inches around. Our luxurious Queen or King of Hearts Hat is trimmed with red and black maribou and .37 inch red and black faceted acrylic gems. Be the life of the party while wearing your Queen or King of Hearts Plush Hat, and if your guests don't approve: OFF with their heads! People always have more fun at a party when everyone is dressed up. Be sure to take a look at all of our costuming attire and accessories.