The disclosure relates to a rotary closure including a housing part with an axis to which a rotary knob is attached in order to actuate a tensioning roller for a tensioning element for the rotary closure in order to wind or release the tensioning element. Further, a first gear is connected to the rotary knob and has internal toothing and a second gear is rotationally connected to the tensioning roller and has internal toothing. Additionally, a drive pinion that is coupled to the gears is provided between said first and second gears, and the drive pinion has a mounting that is configured to be radially moved relative to the drive axis in order to selectively couple the pinion to and release the pinion from the internal toothing of the respective first and second gears.