I received the product quickly, it really is concealing. In my apartment, I sleep in a room that has only inland blinds (not possible to put external shutters) and suddenly despite thick black out day passes through eta evc beautiful days I revellai at dawn :( Since I received this mask I saw, he lets nothing and suddenly I recommend one for my partner because it is so amazed that I, again considering the price and speed of delivery I epeux only recommend ++++++++++++++++++++++++++