But moderately effective practices

Good points:
- Easy to put on and remove
- Easy to wash, so reusable
- Easy to store (small pouch)
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- It must be ensured insert at an angle (on my first use I obviously had not found the angle that suited, plugs made me a little, and as I slept over I woke up with sharp pain, now I pay attention)!
- For sound insulation, I do not find them as good as regular foam plugs (eg it does not stop to hear a girl tell his life on the train, two seats apart.).