【EXCELLENT GIFTS】A excellent gift for your husband/son/boyfriend ,he will love this AB roller so much!! 【EXERCISE MUSCLES】This upgraded core strengthening wheel helps build and tone your abs, arms & back. Effectively work out your core at home, the gym, or the office! 【ADJUSTABLE STRENGTH】Different buttons can adjust the strength of the size to adapt to different heights and exercise needs. The more the number of buckles will cause the greater power needed, eliminating the size of the restrictions.