Ultra-wide ab roller with built-in resistance and ergonomicInterior kinetic engine uses a carbon steel spring to provide resistance Amplify abdominal and arm workoutUltra-wide wheel tread offers stability Ergonomic hand grips are angled to activate arm and core muscles; Handles are removable for easy storage and transportHigh Quality

Abdominal chair designed to work upper abs, lower abs, and obliquesBackrest includes padded massage rollers that pivot with your bodyPadded swivel seat twists and turns with your lower abs for core strengtheningCushions support and massage while you exercise