After studying different models and read the feedback, I confirm that this helmet is fine to enjoy his music quietly without being totally cut off from the world that is useful to hear messages in transport or cross the street safely; it is light and comfortable; you can wear sunglasses and ears are not overwritten. Bach is doing well and the house has a good record without much boom boom; the delivery time is perfect since I have received the order one day in avance.Excellent value for money, took advantage of a promotion. So very happy!