First get the pliers!  Then try em on.
Sound blocking is as advertised. Don't expect them to block out all sound, but they do enough for my purposes. Comfort level is as expected considering th design. The problem is, push them in deep enough (for maximum effectiveness against sound) and you end up with a lost ear plug. I freaked out because I could not remove them. I finally got my needle nose pliers out to remove them. If you sleep with them there is a good chance they get pushed deep enough so that you're going to end up digging around without luck to remove them. If they make the center any longer there's a risk of ear drum damage if you sleep on the side.<br /><br />I don't recommend this product for sleeping only because they are liable to get lost in your ear drum and the next day you're going to have a hard time hearing your wife or your boss. On the other hand some may find that to be the only reason to get em.<br /><br />Also I got these because foam plugs make my ear drums itch like mad. Wearing these for 20 mins are giving me the itches again. But I will persevere for one night to give them a chance.
Rating: 2 stars