About this item 【Abs Workout Equipment】An abdominal exercise machine suitable for installation on the indoor floor, allowing you to exercise without the help of others. 【Suitable for Everyone】There are 3 height adjustment functions, suitable for all men and women of different body types. No need to worry about different heights and weights. 【Note】This is an innovative suction cup sit-up machine that can be firmly installed on a flat and smooth floor, allowing you to exercise without the help of a door/sofa/other people. But it cannot be installed on uneven/slit floors/carpeted floors, b 【Large Suction Cup】The 4.5-inch bottom suction cup provides a strong grip and can withstand more than 150KG of pull! The cold-rolled steel body and thickened sponge provide strong stability and soft comfort. Protect your feet from injury. 【After-Sale Service】We ensure the quality of this Sit up bar, if any defect caused by the manufacturer, We promise a full refund or replacement. Any question or dissatisfaction, Please feel free to contact us