EarBuddies Etymotic ER20s:

These earplugs are engineered to reduce the harmful higher frequencies, while still allowing speech and music to come through clearly. They are reusable and will last years without too much hassle. Included is a handy soft plastic key ring carrying case so you won't lose them when you take them out. If you go to concerts, clubs or are exposed to loud music but still need to hear clearly, then these are what you need.

Normally retail for $30

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