... 's works your ABS ,arm,shoulder of roller slider. 3.roller slider :1000 pcs ) Mail function: Belly-healthy machine, can strengthen the ... , arms, chest, back, and shoulders. Ab slider is the latest in abdominal exercise equipment intended for fast, effective ab exercise. Ab ... Warnning Always begin the Roller Slide exercise by rolling in the direction of the arrow, pushing away from your body. Rolling ...