Home Gym Fitness AB Roller Abdominal Crunch Exercise Machine Situp TrainerDescriptionStrengthen your abdominal, chest, shoulder and back muscles in the comfort of your home with the innovative design of AB Roller. The Ab Roller is a simple abdominal workout machine that gives you the same gym quality ab crunching workout in a small, simple and compact design. The Ab Roller lets the user rock their way to slimmer abs with a simple rocking motion. And although getting an effective workout is important, so is being safe and