Applicable scenario: Musical instrument Product Category: shoulder support Packing: opp Gross weight: 85.7G Size before packing: five claws mute before packing: 5.5*1*2.8cm fingerboard stick before packing: 21.3*4.8 * 0.05cm AV10 strings before packing: 10*10 * 0.3cm Aston Villa 4/4 violin shoulder rest: 21*31 * 38cm after packing size: 19.5 * 15.7cm Selling point: fingerboard stickers: when children start to practice piano, it is difficult to grasp the specific position of the phoneme. In order to ensure the consistency, scientific, more efficient and coherent practice of practicing piano, often quickly improve children's level and arouse children's interest in practicing piano. AV10 strings: metal bead head, loud sound quality, rust-proof and durable. Five-claw mute: it can make the sound made during piano practice lighter. During use, it only changes the front volume without changing the sound quality of piano. Aston Villa shoulder support: professional shoulder support can better lie on your shoulders, it is not easy to fall off, which greatly reduces the pressure on the neck UI and prevents the neck from growing calluses.