"Awesome Sound quality"5.0 starson by mattbatt
Pros: I'm a sound guy for a living, I'm exposed to loud music on a daily basis. These earplugs are very clear they don't color the sound much. They only drop the SPL by about 15db but that is enough to save my hearing and take the edge off of the sound.
Cons: I've lost two pairs but they are cheap. They wont sound as good as a pair of custom molded earplugs but at 1/10 the price I think they are well worth it.The blues fit in smaller ears if you have big ear canals you should check out the regular ER20.
Summary: Buy two pairs in case you lose one