1. Size Detail: Simulated train cave tunnel measures approximately 9.05 x 7.87 x 5.7 inch/ 23 x 20x 14.5cm after assembly, leaving ample space inside for the train to pass through. The equipped ascending wooden train track measures approximately 24cm/ 9.45 inches long, 4cm/ 1.57 inches wide, and 1.2cm/ 0.47 inches thick 2. Quality Materials: Ascending train track is made of quality beech wood, which is and reliable without odor. The simulated cave is made of quality plastic, which is durable, good performance, smooth and firm, easy to install, and not easy to deform. It is light and easy to use at any time, bringing a better gaming experience 3. Route Design: Wooden train track accessories have been handpolished many times, with a smooth and round surface. The Scurve route design and the plastic cave are perfectly connected, making your train routes varied and the tracks more diverse, allowing children to give full play to their creativity 4. Wide Application: Wooden train track tunnel encourages children to use their imagination and creativity when building and playing, and children can create a train world. You can play with friends and classmates, communicate and exchange with each other, which is a good choice to spend your leisure time