Have been using thunderplugs for a few months now. And comparing it with the make shift cotton plugs that I was using, I can say that these make things sound so much clearer! Its almost the same as what you will hear without the plugs, except the fact that it makes it quieter and easy on your ear drums. The best quality I discovered was how they accept all frequencies in all bands, and make it sound as true to the actual sound as possible.1. Look sturdy and can be worn comfortably for a decently long time.2. Comes in the good looking keychain case so you can be sure that you wont lose them!3. Good looking pair of ear plugs and have an extension on the outer side, so that its easy to pull out and doesn't get stuck.4. Attenuates the sound a good deal, while still preserving the quality of sound.The only negative would be that it took me a while to learn how to easily put the plugs inside my ears. I couldn't fit them in the right way. But it eventually became easier!