Powerstretch Ab Roller Wheel The roller slide provides one of the very best exercise for the midsection Powerstretch roller for ABS. 1.AB wheel 2.Maximum User Weight: 100kg / 220lbs 3.Assembled dimension:24*16*16CM Exercise step: Hold one hand on each handle. Pull in your stomach muscles and arch your back. Inhale before beginning and slowly roll out the machine, meanwhile allowing your torso to open up Don't just push your arms out. Take your torso from a curled position to an extended, uncurled position. When you've stretched out your torso as much as ID comfortable, slowly begin rolling the machine back toward your knees, emphasizing the re-curling of your torso, and exhaling INSTRUCTION OF ROLLER SLIDE The roller slide provides one of the very best exercise for the midsection, it allows The abdominal to be isolated, causing an effective extension and contraction of the AB muscles in your arms, shoulders and back.!!!