Features: Piano practice keys chart, 88-key, 3-D drawing, looks like the real piano keys. For helping beginners to know more about piano keys and practice piano fingering. You can place it on the table top for fingering practice or keep it behind the piano keys as reference. Lightweight and rollable design, convenient to carry around, you can practice anywhere and anytime. Durable PVC material, anti-tear, waterproof and dust-resistant. Specifications: Version: X-02 Fingering Version/ X-03 Beginner's Version(with notes)/ X-04 Learning Version(with notes & stave) Material: PVC Black Key Size: 9.7 * 1.6cm / 3.8 * 0.6in White Key Size: 14.7 * 2.2cm / 5.8 * 0.9in Item Size: 120 * 19.5cm / 47.2 * 7.7in Item Weight: 69g / 2.4oz Package Size: 20 * 4.5 * 4.5cm / 7.9 * 1.8 * 1.8in Package Weight: 89g / 3.1oz Package List: 1 * Piano Practice Chart