The Sandbag Machine utilizes two pads that move back and forth across the buttocks to firm and tone, and at the same time strengthen the abdominal muscles. As the buttocks is exercised, the cellulite is broken down and dissolved. (Cellulite is fat and water trapped under the skin resulting in a bumpy, dimply skin texture.) The gentle rhythmic action of the machine breaks down the cellulite giving a firm, smooth tone to the skin. The sandbag applies weight to the abdomen, helping the machine to work more effectively on the hips.