Changed from 5 stars to 2 because they wont hold up for long. It may reduce low frequency noises but that often makes sounds of people talking more distinct and distracting. In a remote village, a sinister master-of-disguise is at work bumping off a list of unsuspecting victims that he has long sought vengeance on. Got the items, the box seems just abit funny. I just got it today and Im going to turn around and buy another one. I suspect Shure will fix this. Only use an amount the size of a pea! These are really good ear buds. They usually connect right away and the sound quality is good. There are 64 containers.