The Fitness-Mad Duo Ab Wheel is an effective tool for strengthening your core and achieving stronger, more defined abdominal muscles. A sturdy tool, it features an EVA tyre with PVC end caps and a metal bar inside PP handles with TPE rubber grips. The two-wheels offer greater stability while its lightweight design means it’s easy to use on-the-go. The perfect size for your gym bag, you can take it with you and give those abs a workout wherever you go. The Duo Ab Wheel can be used on any smooth surface. NOTE: This product should not be used by those with shoulder, neck, back or abdominal conditions or when pregnant.