Premium Quality: Adopt healthy natural material, thickened silicone teat. Suction cups have strong suction power, safer and more stable, and durable for you. Compact and light: The training device is compact and light and very practical for training at home and when traveling. Space-saving and very practical for storage and transport anywhere. Adjustable Height: There are four height modes from 7.3 to 8.3 inches that you can choose based on your practical situation. Press the spring buckle to adjust the height. Ergonomic design: healthy and comfortable. Increase the foam material, soft and comfortable, protect the instep from pain. Helps you roll abdominal movements, push-ups, side kicks, sit-ups and other sportsWidespread: The sit-up bar can help you with the sit-up and is great for home, office, gym, etc. Note: Please lift the smooth floor without any gaps specification : Type: Sitting Quantity: 1pcsMaterial: metal + sponge Color: black and white Size: 28 * 12 * 18.5cm / 11.4 * 4.7 * 7.3in (L * W * H) Height: 18.5-21 cm Weight: 800 g Package: 1 * sit-up bar aid