Safe and child-friendly materialsChildren's puzzles are made of natural materials, safe and environmentally friendly, with smooth edges and no burrs. Precise cutting technology ensures that each puzzle piece fits together perfectly. Puzzles for 3 year olds Don't hesitate to let your baby play. Educational toy- Our puzzles are different from others, these puzzles have 4 different difficulty levels: 9 Coins, 12 Coins, 15 Coins, 20 Coins. Children's eye and hand coordination ability, ability to recognize colors and shapes will gradually increase as the difficulty increases. Ideal for studying at home while having fun. With metal box- Our puzzle is equipped with a metal box with a lid, easy to carry and store, very practical. Perfect Birthday Gift for Kids- Suitable for children over 2 years old. Colorful colors and interesting forest animal shapes, children will like them. a perfect idea for children's birthday gift.