An exciting expert level balance trainer! The Bongo Board is a maple plywood board with a polypropylene undercarriage. It has a urethane roller with polypropylene center and a rubber and nylon bungee cord.  Double ball bearing wheel system causes two halves to rotate independently. Tapered roller ends allow toe-heel movement and rotation. Safety retaining cord promotes safety and easy transport. Skate-style. A moderate to high level of fitness is recommended.