So far it does what its supposed to
I got it for work. It came wrapped in a small tin that had a sticky/powdery but good smelling substance on it. I think the buds had the large already on it so I switched to small. Small works but doesn't fully block the noise like foam ear plugs do. I'm going to try medium and see if it works; I clean it first though before switching because I have an ear infection (not related to these plugs).
Rating: 4 stars