Each beautifully illustrated puzzle depicts a different ethnic group to demonstrate diversity. Pieces are made of flexible, thick and unbreakable plastic for easy use and durability. Best of all- they can be easily cleaned! Plastic trays are also user-friendly as they are made for easy assembly and storage. Pattern cards are made of thin plastic for durability, too! Includes 4 designs. Each puzzle is 20 pieces: each piece measures 2-3/4" x 2". Puzzle measures 8-1/4" x 12-1/4" when finished. Plastic tray measures 10-1/4" x 14-1/8".