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. It has flexible wheels with soft sponge cover and hand rack, comfortable to use. It has six speed power strength resistance pull rope, 44 kinds of fitness action, can be used at home, office, outdoors. Compact and easy to carry. The material has the toughness and strong impact resistance, non-toxic and tasteless and has a great bearing degree, so it is not easy to be deformed. It is an excellent gift for your husband/son/boyfriend ,he will love this AB roller so much. The wheel are made from 100% eco-friendly natural latex