Speaking of Silicone :
i would be very interested, i have always the same experience with CIEMS, both silicone and acrylic: At first sight, the isolation is 100% for a couple of days, and then, i think my ear get used to it an develop the capacity to hear even through it.....not 100%, but i guess i regain 20% of hearing ability after while still wearing them.
It's not disturbing at all, not a complaint here, but i wonder wether this is a good thing or not: is my ear making pro-active efforts to cancel the loss, and in that way, is it potentially a bad thing which might get you to loose your natural hearing ability?....because your ears get simply tired....?
Or doesn't it matter at all.....and i just have super power ears (they tend to turn green sometimes....)
would appreciate your opinions