This 4-in-1 puzzle contains no less than 4 different puzzles! The number of puzzle pieces increases from 12 to 36, enabling your child to build increasingly difficult puzzles step by step. The format of the puzzle pieces has been adapted to the number of pieces in each puzzle. This means that the puzzle with the least number of pieces also boasts the biggest puzzle pieces. The 4in1 puzzle is suitable for children aged 3 and older.