Correct Opening and Closing of the Wheels
When opening and stowing the wheel, please make sure that the direction of the arrow is upright, and then tap the switch with a certain force (instantaneous impact force).
The direction of the arrow is not the vertical lock. It is the state of the safety lock. The locked state cannot switch the wheel.
If you want to prevent the wheels from your roller skates (Pop-out or Retraction) while walking or sliding, you need to make sure the button arrow changes from vertical to parallel.