Mudpuppy Construction Magnetic Design Sets provide 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 Meister has illustrated a highway overpass construction project, a quarry, a home building site, and a high tech industrial area. Create backhoes, bulldozers, pile drivers, bucket loaders, dump trucks, and all sorts of heavy equipment. Don"t forget the hard hat! - Mudpuppy products meet the most stringent safety standards in North America and E.U. and are compliant with CPSIA, ASTM, and CE regulations - Product is phthalate free and printed with nontoxic inks - Hinged tin measures 8-3/4 x 6-3/8 x 1"