Alpine PartyPlug Earplugs Transparent

This hearing protection is inexpensive and effective. I use them at concerts as well as on stage for vocals and rock guitars. They are unobtrusive, comfortable, and washable. The carry case is tiny and has a handy chain to attach in in your gig bag or to your keys to bring it with you everywhere.

The sound is a serious grade above disposable earplugs and well worth the investment. No matter how fancy your earplugs they will inevitably change the sound you are hearing, that said these do quite a good job at keeping a useable sound. Like virtually all earplugs, they reduce treble more than bass, however the frequency curve of volume reduction feels very natural and unobtrusive. I'm able to get used to their sound very quickly and that doesn't bother me at all. And of course they greatly reduce ear fatigue at concert volumes.

Since these are inexpensive, you don't have to stress too much about saving them and not losing them. Just use them!