Originally Posted by
no motor?
How about foam earplugs? Think of them as sunglasses for your ears.
Nooo, no no no no.... Those are good for NASCAR, outdoor firing ranges, and heavy industrial work that doesn't also require soundproofing headphones. You'll hear your brain jiggling around in your head during bumps, but not much else. You need to hear some fidelity, notably sounds in the "s" range, and foam plugs eliminate them almost completely. Trust me on this...
If earplugs are desired, I'd recommend Etymotics over anything else.
http://www.etymotic.com/ephp/er20.aspx