NON-SKID DESIGN: The keyboard bench stool has rubber non-skid sleeves to keep the keyboard seat from shifting while you play the piano. It is very stable due to the high quality steel bracket with an X-style design ADJUSTABLE AND COLLAPSIBLE: To ensure a comfortable height for playing your instrument, you can adjust the height by adjusting the 4 position bolt lock at the bottom. When you're not using it, you can fold it up to save space and make transportation HIGH-QUALITY SEAT: High-quality materials and extra-thick foam keep your Keyboard Bench from deforming after extended use. It is also very comfortable to sit on and prevents discomfort when used for long periods of time