Educational and Fun: This stem science kits allows children to create their own percussion instruments, which not only enhances their hands on ability, but also helps them learn scientific and understand the principles of sound production and propagation Innovative Design: The design of the can imitate the effect of thunders, allowing children to experience the charm of technology during play and their interest in science Environmentally Friendly: All materials included in this percussion instrument thunders tubes is made of environmentally friendly paper materials, ensuring the secure of children during use Compact Size: Measuring 20cm by 7.5cm, this portable instrument is easy to handle and store, making it convenient for both home use and travel entertainment Application: Science toy is suitable for a wide range of people, including primary school students and parents who want to strengthen parent child relationships through shared activities Size Chart:20cmx7.5cm/7.87inchx2.95inch Color:Blue Material:Paper+Metal Package Contents: 1 * Thunder Tube Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.