Sit up Assistant Supporto per caviglia Allenamento addominale Core Fitness Sit Bar Aspirazione portatile per situp

 Instructions for use:

1. After you assemble the product,you need to find a clean, smooth and dry surface without gap, then press down on the handle and press down the switch.

2. Because the suction cup is based on the principle of squeezing the air inside to achieve adsorption, it is necessary to ensure that there is no air inside when it is adsorbed.