What a way to make an entrance to a party! This inflatable dinosaur costume for kids is brilliant to add fun and laughter to a fancy dress party! Bring the dinosaur back from extinction and become it's best friend. Kids fancy dress costumes should be creative and bold- this costume sure is both! Maybe your child is having a dinosaur themed birthday party? Do they love dinosaurs and would love to ride on their backs? Then this is the costume for you! Inflatable costumes is easy to wear and can adapt to many different sizes. A small machine is attached to the inside of the costume and constantly inflates once pressed on.