[rpozarickij]

I use EAR Classics too. I sleep on a dense pillow, so when there's some noise outside/near the apartment I lay down on the side and put in the earplug into the "top" ear so that the other/bottom ear is then blocked by the pillow. If I change my position during sleep, the noise is usually gone by then (also I tend to be bothered less by noise if I'm already asleep). This is because for some reason I generally sleep better when my ears aren't covered.