The Revolex Xtreme Ab Exerciser, Is Ideal For Abs, Chest, Back, Arms, Shoulders, Thighs And Glutes. Offers Upto 6 Different Levels Of Training And 44 Different Exercises..Moving Forward Increases The Tension In The Assisted Bidirectional Power Bands, Generating Greater Resistance And A More Strenuous Workout. Moving Backward Slowly Releases The Accumulated Tension, Helping You Return To The Original Position Easily And Effortlessly..Flexible Sliding Wheels On The Sides With Sponge Coated Handles For Better Grip And Comfort. Develops Your Chest, Back, Arms, Shoulders And Abs In One Movement..Offers Up To 6 Levels Of Training, 44 Different Exercises.