Target upper abs, lower abs, and obliques simultaneously on a curved-track core trainer rated at 440 lbs. The ergonomic glide path extends your range of motion while reducing neck and back strain. Four adjustable height levels let you scale resistance, foam knee pads and anti-slip handles keep you positioned, and a built-in digital counter tracks reps automatically. The foldable ab machine collapses flat for storage behind a door or under a bed.