No discomfort at night, fits perfectly in the ear and well isolated from surrounding noise without completely hide the alarm clock or the various alarms. This is exactly what I was looking, no longer hear the voices and cries but others can hear a clock or alarm, which is impossible with conventional plugs. By inserting against is paramount if they are not effective (logical). At first, I advise you to insert before a mirror to be sure that the two membranes in the ear plugs should bend slightly and the shape of the ear canal. Thereafter, you would put them blindly, without turning on the light!
