Rockville RKB60 Extra Thick Padded Foldable Keyboard Bench Adjustable Height RKB60 Deluxe X-style Keyboard Bench. Legs fold flat for storage and travel. Heavy-Duty Under Seat Steel Rails. Weight Capacity: 300 lbs. Cushion Thickness: 3.14&quot;. Bench Seat Size: 12&quot; x 24&quot; Height in center position: 21&quot;. Four adjustable heights: 18.9&quot; - 24.4&quot;. All-welded construction.