... KING-FITNESS PRODUCE FOR AB wheel,AB FITNESS,POWER ROLLER,,AB ROLLER,AB EXERCISE ,exercise wheel AB WHEEL,CHINA KING-FITNESS ... -ABW-04 COLOR: black, bluePackaging Detail:color boxDelivery Detail25-35daysSpecificationsAb roller wheel 1) Ab wheel 2) exercise 3) packing : color ... and the muscles tight. The gluteus, abdominal, upper arms, lower back and hamstring muscles should all be flexed and tense ...