Self-Priming ==== This self-priming sit-up bar is designed to free your hands and exercise your body. Rubber suction cups hold the floor securely for a safe and stable workout. COMPACT ==== This exercise equipment is lightweight and compact, making it ideal for home workouts and the trips. Space-saving, easy to store and carry anywhere. Sturdy ====== Heavy-duty steel frame with extremely high durability, great helper for waist, abdomen, muscles legs, body sculpting, butt lifting, muscle shaping. HEIGHT ADJUSTABLE ====== The thick, soft foam grip fits comfortably around your foot and avoid friction. Adjustable height to meet different needs. Wide application ==== Suitable for smooth surfaces, such as tiles, marble floors hardening concrete, ensure the floor and suction cups are clean .