Description: Exercise hand and brain combination This is a creative track ball building block combination toy, can exercise the babys hand and brain combination, space to move imagination.i Spirit of exploration After assembly, baby will feel a special sense of accomplishment, and at the same time can improve the babys spirit of exploration. Premium Material The construction building toy is made of high quality ABS material, durable, eco-friendly and nontoxic. Specifications: Packing Size: 20*18*5.5cm Package: 1 * set of Construction Building Toy