Mudpuppy Dinosaurs Magnetic Design Set provides hours of portable fun. A hinged tin holds 4 illustrated background scenes on 2 double-sided cards plus 3 sheets of interchangeable magnets. Magnets adhere to the tin for fun at home or on the go.Michael Slack has illustrated prehistoric backgrounds and lots of colorful dinosaur parts. Make your own T Rex, Pterodactyl, Triceratops, or mix and match!