This is an educational green 3D educational toy that will help improve your child s attention and creativity. Children can improve their curiosity and imagination while exploring logical thinking applying and solving problems. AMAZING EXPERIENCE:When building a 3D model suite it will bring you a challenging and amazing experience. Explore the world with 3D models and you ll restore real-world architectural landmarks. PARENT-CHILD INTERACTION: it will exercise your hands-on ability. It is not only a toy but also a communication link between you and your baby. Have a good time with your child and you and your child will have a warm and wonderful family experience. ENVIRONMENTAL MATERIAL:environmentally friendly EPS foam board double-sided color coated paper safe environmentally friendly moisture-proof wipeable durable (children should not eat). EASY TO ASSEMBLE:size: 35 &times 26 &times 11.5cm easy to install no need for scissors glue and other tools the minimum assembly time is 90 minutes (speed decision). Assembly steps: 1. Follow the instructions and each puzzle is numbered to help you assemble quickly. 2. It is recommended to punch out all the interlocking holes before assembly. 3. To ensure that each part can be clearly identified do not eject all parts at once. Remove only the parts required for each step of the assembly process. Packing list: 1*3D puzzle model