Goplus Ab Rocket Crunch Twist Trainer is the perfect home use Abdominal Trainer for toning conditioning and strengthening core ab muscles. Abdominal Crunch twist trainer offers 3 levels height to ensure you get the right abdominal crunch workout. Back rests with padded rolling support cushions that pivot with your body eliminate back and neck strain. Enjoy a fantastic abdominal crunch workout with the Ab Crunch Twist Trainer.Feature Goplus Ab Rocket Twister calories burning Cushion rolls while you rock Supports back and neck Three levels adjustable height Comfortable PU cushion Compact & easily folds up Suitable for both men and women | Costway | | Core Ab Trainer Bench Abdominal Stomach Exerciser Workout Gym Fitness Machine | orange/black | Best Buy