VEVOR AB Workout Machine Equipment Home Gym Core Abdominal Trainers AdjustableProduct Features Sculpt Your Abs This ab workout machine features an ergonomic dual curved sliding track, increasing effective sliding distance, resulting in greater training intensity compared to conventional straight bars while reducing pressure on the back and neck. The fixed motion trajectory, along with the swiveling knee pads, provides comprehensive training for the upper abs, lower abs, and obliques. Safe and Stable Structure Maximum Weight