Previously we used a little expensive one of famous goods, but since we use almost every night, it is less expensive to change here. In comparison, it sticks well as a bandage. The repulsive resin feels slightly small, but the effect can be felt without any problem. Therefore, I am satisfied with COSPA. Although it does not make a mistake when there is a small protrusion or a dentist in the center so that it will not be shifted when pasting.