Thank you for viewing. These picture puzzles are suitable for different ages and stages of development. 4-year-olds: 3 sets 5-year-olds: 3 sets Total: 6 sets The "Working Vehicles" puzzle is missing 3 pieces, but you can get up to 3 replacement pieces with the piece request card. The "World Flags Encyclopedia" puzzle does not have an instruction manual with a piece request card. Also, some sets are missing their original storage bags (they are in Ziploc bags), and there is some wear and tear, but the puzzles are generally in good condition. My child learned the names of countries and hiragana characters very well with these. How about these for indoor fun as the weather gets colder? #picturepuzzle #learningbrain #kidspuzzle