The Suzanne Somers Butterfly Trainer is a lightweight, portable, easy-to-use upper body exerciser. Use it to tone, firm, and shape your arms, shoulders, chest, back, and even your waist. The balanced resistance coil within the Butterfly Trainer helps to simulate a workout as if you were at the gym. Plus, it helps to gently stretch your muscles while youre toning and shaping. Its unique design makes it easy to use so exercise isnt uncomfortable, and because its lightweight, you can easily take it with you wherever you go.