The knobs on each puzzle piece is specially designed for your little kids and exactly the perfect size fitted to toddlers' hands. With these sturdy pegs, the knob puzzles are suitable for them to be easily grabbed and avoid swallowing. Never fall off easily like common puzzles. It also encourages hand-eye coordination and imaginative play. 12 variation Capital Letter Small Letter number shape transportation Insects farm animal zoo animal sea animal Vegetable fruit Occupation