Fat Gripz – increase strength and muscle mass quickly. Original Fat Gripz are for sale - for maximum growth of arm and grip strength. Do you want bigger biceps, stronger forearms, and iron grip? Fat Gripz is the world's number one exercise accessory that will take your workout to a whole new level. It fits any bar, dumbbell, or pull-up bar and increases their diameter, which radically changes muscle load. Why should you buy Fat Gripz? More muscle activation: training with a thick grip activates more muscle fibers. You can feel how the muscle works and grows with each repetition. Grip strength