This automatic rebound abdominal wheel helps strengthen core muscles, burn calories, and build a healthier figure through effective home workouts. The ergonomic double-wheel design features anti-slip surfaces that support up to 440 pounds, providing exceptional stability and safety during exercise. The automatic rebound technology makes ab training easier by assisting with controlled movement as you roll forward and backward. The ab roller comes with a comfortable detachable handle, triangular support structures for added reassurance, and a cushioned kneel pad for comfort during floor exercises. A built-in phone holder allows you to watch videos or follow workout routines while training. This versatile fitness tool engages multiple muscle groups including abs, hip flexors, shoulders, and back muscles for a comprehensive core workout. Assembly takes just seconds. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Made from durable PP and TPR materials, the assembled roller measures approximately 14 by 9.8 by 5.9 inches and weighs 2.6 pounds.