The Deluxe Abdominal Trainer from the Marcy Bruce Lee Dragon Range is a brilliant piece of fitness equipment for building ab muscles and creating definition. The unique design of the ab machine means that even after your abdominal muscles have reached failure you can engage your arms to push out more ab crunches therefore taking your abs beyond failure to achieve those all important last repititions. This ab roller should induce a spark into your core workout and really help you see visible results that most strive to achieve.