A product called Everlasting Gobstopper was introduced in 1976 by the Chicago candy company Breaker Confections. It had licensed the "Willy Wonka" name in 1971 so that their candy could be used as merchandising tie-ins for Willy Wonka & the Chocolate Factory film, which was released the same year. According to Roald Dahl's book Charlie and the Chocolate Factory, the fictional Everlasting Gobstopper is a candy that not only changes colors and flavors, but can never be finished, and never even gets smaller. It is implied that they may also be indestructible. Factory owner Willy Wonka explained that they were "for children with very little pocket money".