Master Pieces combines the highest quality in jigsaw puzzle production with the finest of artwork to produce true masterpieces. Each puzzle is constructed of thick puzzle board made of recycled materials. The puzzle pieces are random shaped and fully interlocking. As a finishing touch, the puzzles are aqueous coated to provide a protective, high gloss finish.Bring history to your house and re-create route 66. This Spirit of America puzzle is sure to be a hit!Ages 10 and UpBy Master Pieces