Manufacturers description for Meinl CAJ100BU-M Ergo-Shape Pedal Cajon:
The MEINL 30th Anniversary Cajons feature our new patent pending ergonomic curved frontplate, made from exotic African Bubinga Wood. The new ergonomically shaped frontplate has a slight curve (Ergo-Shape) that follows the natural contour of your hands for extreme comfort when playing. You will feel the difference!
This cajon also features our patent pending foot pedal.