After I wrote review after 2 months usage, I bought additional balls to wear.
When I received it first, I tried to wear all balls, but failed so, I gradually added balls. Now no problem to wear 9 balls. Recently, I have lot of free times to stay at home, so I wear almost all day except sleeping. (wear for 1 to 2h and pipi then wear it again.)
After I wrote review after 2 months usage, I bought additional balls to wear.
When I received it first, I tried to wear all balls, but failed so, I gradually added balls. Now no problem to wear 9 balls. Recently, I have lot of free times to stay at home, so I wear almost all day except sleeping. (wear for 1 to 2h and pipi then wear it again.)