Strange at first, but great earphones!,
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This review is from: Sennheiser CX300-B Earbuds (Black) - Old Version (Discontinued by Manufacturer) (Electronics)
I'll be honest, at first I felt a little violated when I stuck the earphones in and they went into my ear. After a while I got used to that feeling and the sound and isolation these provide is incredible. They cancel out noise tremendously well, which is very helpful for me as I work overnight and sleep during the day and put some music on to help drown out any background noise. Very happy with my purchase, and I have other Sennheiser products as well, I have never had any trouble with the brand.