I owned a set of Bose earphones - frail, poorly designed, easy to break a thin plastic fixing, which must cost pennies to make and yet Bose refuse to do repairs. Bose are very non-customer service oriented and very non-green. So I looked for soemthing better and having read other reviews I found Sennheiser and these robust, well designed earphones. They are excellent operationally both for noise cancelling and listening to music. Also hHaving a button on the earphone to turn the noise cancelling feature off, so that one can talk properly to say airline cabin crew and still have two free hands to deal with a G&T is also helpful. Recommended.