Build and play with multiple models. Flexible soft pieces are great for kids. No batteries required. Fun for all ages! Features: This building set helps the child's mind to build plane and car and understand the name, color, shape and use of the wrench and screw, bolt. Comes with multiple, soft and colorful pieces that will help develop the understanding of parts and their different roles. Improves and fosters hand eye coordination, and the ability to problem solving. Engineering interchanged pieces will help explore children's imagination and creativity. Non-toxic, eco-friendly rubber fiber material, Includes flexible, and sturdy parts. Suitable age: more than 6 years old.