Portable push-ups Sit-ups Assistant tool Device Sit up Bar Abdominal Core Trainer At Home An abdominal exercise machine suitable for installation on the indoor floor, allowing you to exercise without the help of others. 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. 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. 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, because they cannot produce adsorption