Silencio Super Sonic Ear Plugs – Brownell’s carries them.
Don’t know how far they stick out your ear – they may interfere with some ear muffs. I’m wondering if they will work as designed when used under muffs (which have already reduced much of the sound).
Personally, I like to double up with Howard Leight “Quite” plugs.
[url]216.120.94.37/cgi-bin/WebObjects/HLSite.woa/wa/product?key=quiet[/url]
They’re not easy to find. However, they’re reusable, made of closed cell foam (so they don’t pick up dirt like the open cell type), and are easy to take out and put in repeatedly. They won’t suddenly pop out of your ear canal like the disposable, open cell type, that you roll before putting in your ear.
They don’t seem to be quite as effective as the roll type plugs, which is OK when you’re doubling up. Also, they’re available in a reusable plastic container.