This new way of doing roller/wheel abs conditioning uses one roller for each arm, custom-made rollers made of 2 high quality small tires connected with tape and pole, not the 2-handle bar ones - some of those are really flimsy and unstable, but big5 sold some good ones, I don't know if they have them anymore (they're white/black). Check out how to make custom-made abs roller and new techniques of using them on this youtube video: [youtube]YmPxIUt7AEw[/youtube] From the customary abs roll-out/in from your knees, all the way to standing to pike/180 one-arm roll-out with a weighted vest - the roll-outs from your feet rather than your knees are good for flexibility too. The one with your arms going out and in looks good for cross on rings, and the push-ups one and roll-outs good for kips and bars. (via gymnasticscoaching)