The Costway Ab Machine is designed for optimal stability and safety during your workouts. Featuring a heavy-duty steel frame and high-density foam padding, it protects your elbows and knees while providing 4 adjustable heights to enhance your workout efficiency. The clear LCD display tracks your progress, while separated sliders offer diverse workout options. Safety is paramount with 2 lock pins that prevent accidental unfolding, and anti-slip foot pads ensure added stability. The streamlined handrails provide a firm grip, and the silent, curved sliding track minimizes noise. Its compact, 1-step folding design makes it perfect for home, office, or gym use. Note: Requires 1 AA battery (not included) for operation.