High Quality: The portable sit-up bar is made of natural rubber, which is strong and durable. The handle of the portable sit-up bar has foam protection, is wear-resistant, environmentally friendly, easy to hold, convenient, and safe.12.5 cm suction cup: The portable sit-up bar features a thick silicone suction cup; the diameter of the suction cup is about 12.5 cm. The strong suction cup can be firmly fixed on the ground. The portable sit-up bar is suitable for smooth surfaces such as tiles and marble floors.Flexible and adjustable: The portable sit-up bar includes a spring buckle, and the height of the unit can be adjusted to 4 levels. The height can be adjusted based on individual needs and body height.Easy to carry: The portable sit-up bars are compact and lightweight, taking up minimal space, making them very convenient to carry. The portable sit-up bar is an ideal choice for abdominal training.Multiple functional uses: The portable sit-up bar can be used for sit-ups, flat rack exercises, push-ups, abdominal workouts, and other fitness activities.