Good for spining classes
When spinning the instructors have the music so loud the speakers keep blowing. I think my hearing has already suffered from years in classes.  The inexpensive foam plugs are not the answer, they take too much fuss to get in correctly and they block the voices. These db plugs are great. I pop them in just as the music cranks up and I can hear the instructors. Actually I forget they are in during class. They definitely block the loud music while allowing me to still enjoy it.
Rating: 5 stars