thee strike

This Wii Bowling ball was debuted at E3, this accessory is made to look like a real bowling ball. The CTA Digital claimed that "This Wii peripheral is the first of its kind to be fashioned after an authentic bowling ball, turning your wii-mote into the optimum performance-enhancing accessory!".
To operate simply press the release button to open the ball in half, place the Wii remote inside and close the ball. Once the remote is set inside, plug the three holes with your fingers, as you would a bowling ball. Lastly, make sure to wear the wrist strap securely around your wrist, this will prevent the ball from accidently flying out of your hand, and you are ready to bowl virtual strikes like a Pro! And you can still access to controls via a set of buttons on the outside of the ball.


source: here