Mario Bro: Green Mushroom Aviator Costume Hat This is a costume hat from the classic game series, Super Mario Brothers! Features the Green 1Up Mushroom that will give Mario an extra life! The hat is aviator style that keeps your head and ears warm! The hat is also fully lined. Its a soft fleece that is very conformable to wear! The hat is available as one size fits most. Approx. 24-inches around. Its a great item for fans of the Mario Brother series!