... 3) Can increase muscle mass, strength, endurance, power, And definition 4) Fully transparent, half transparent available 5) Rim material: PU, ... shaps, tones and strengthens in just minutes a day. With this abdominal fitness equipment one can work on ABS, waistline ... in your arms, shoulders and back. ASSEMBLY INSTRUCTIONS: The Roller Slide frame comes fully assembled, Just slide on the handles until ...