Please note that the mixed delivery of the original version and the new version, you may receive a different version. The bricks are very tiny, please look at the pictures before ordering. We suggest holding the pieces with tweezers (not included). Materials: Plastic. A set including 3689 pieces. Instructions included. The product meets the criteria and is suitable for 3+. However, based on customer feedback, we recommend for ages 14+. Instructions can be a little complex, please be patient and you'll enjoy it. Once the first layers are done, it becomes much easier. Thanks to the know-how of the building blocks It is also a leisure game for adults, fun and reduces the pressure. Great gift for anyone who loves building blocks. Good for display.