The bricks are very small, please look at the pictures before ordering. We suggest holding the parts with tweezers (not included). Instructions can be a little complex, be patient and you'll appreciate it. Once the first layers are done, it becomes much easier. Materials: plastic. One set including 1300 pieces. Instructions included. The product meets the criteria and is suitable for 3+. However, based on our customers' feedback, we recommend it for ages 14 and up. A variety of animals, so cute and adorable, in a color box, can be a birthday gift for kids. children. It is also a leisure game for adults, fun and reducing pressure. Great gift for anyone who loves building blocks. Good for display.