Feature: 1. Sound Training: Shaking the cylinder to make different strength sound, cultivate the ability to distinguish the strength of the sound. 2. 5 Patterns: Sound cylinders adopted 5 different patterns, with concave and convex texture, which can improve kids sensory ability. 3. Brain Development: Sound cylinders sound boxes help to exercise the development ability of the baby brain through touch different patterns. 4. Pattern Pairing: Wooden sound cylinders with 5 sounds and corresponding pattern pair, which can bring endless fun for your kids. 5. Excellent Wood: Educational sound cylinders toy made of basswood material, firm and sturdy, which can be used for a long time without broken. Specification: Item Type: Sound Cylinders Sound Boxes Toy Material: Basswood Base Board Size: Approx. 22 x 12.5 x 1.8cm / 8.7 x 4.9 x 0.7in. Package List: 1 x Base Board10 x Wood Sticks