Exceptional product. Took me about two days to get used to the 'feeling' of wearing the device. Now, a week later, I am hooked. The busy neighbourhood I live in (stupid dogs barking, kids screaming and cars racing down the road) has become blissfully silent. I can study on my PC, read, write and concentrate. Ideally people would learn to curb their selfish habits, but in the meantime, these will do nicely. It's like an extra layer of double glazing . Perfect!