The World Of Avengers Puzzle After arranging the puzzle,The child opens the windows to see what is really hidden under them. Toddlers can also guess first and ONLY then open the windows to check if they have guessed correctly. in a friendly way they combine fun with learning about the world. After assembling the puzzle, a 60x40 cm picture will be created. High quality materials Safe and environmentally friendly Full of changes meet the needs of children. Open their imagination and smarter. Enjoys a good reputation and popularity in many countries. Nice design with good quality. Puzzles with windows that open A 60x40cm picture will be created ​24 Pcs Top Quality Puzzle Age : 3+