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.Take a ride with this dolphins! Challenge yourself to this 500 piece round puzzle. Dolphin Encounters features the art of David Miller.Ages 10 and UpBy Master Pieces