This bag has a zipper design that is difficult to use. The sound stopped working on one side. Je vais régler la sensibilité de cela et refaire un test. I materiali sono molto buoni, bassi potenti e acuti molto chiari e limpidi. After I ruled out all the others (by reading reviews, watching demo vids, ect. The headset is comfortable and I feel it has good sound, however it has one HUGE flaw with multiple devices. She says Spotify sounds on this pair just like her wired Bose headphones. 5 (my usual Fitflop size in their closed shoes) and a 6 because of the reviews. What more can you expect from a headphone. Excellent product and great value.