The following graphic illustrates the muscles being used in pulling exercises. Grip width and hand position determine which back muscles will be isolated to the greatest degree. For this demonstration I will show a wide grip pull (handles apart/palms facing down), narrow grip pull (handles clipped together/palms facing each other), and a wide grip pull combined with a one arm rotational pull. Check out this link for more information on the CrossCore Suspension Trainer.
Check Out Video for Pull Variations!