These bright green mushrooms on our Mario socks are there to give an extra life to the little Italian plumber. Known as 1-up mushrooms, they are dotted around the Nintendo video game, but they are a little hard to find, unlike our crazy character socks. If you pull on a pair of these socks, you are sure to be noticed. They make an ideal gift for guys who love Mario and Luigi. So why not treat someone you know to these fun-loving Nintendo accessories.