... AB fitness, AB twisterTOP QUALITY! 2013 HOT SALES! Abdominal Trainer, AB trainer, AD trainer, AB core,AB slimmer,AB fitness, AB twister Abdominal ... Size: 67×17×35CM1)Starts with a jerking motion on the neck,shoulders and lower back 2)Unique,progreesive resistance system ... easy storage*1x40'HQ:1520sets 2013 HOT SALES! Abdominal Trainer, AB trainer, AD trainer, AB core,AB slimmer,AB fitness, AB twister