Originally Posted by troll05
There is also the posssibility to make individual ear-plugs in combination with a standard in-ear headphone (silicone plugs as they come with mp3 players).
In Germany there are many companies offering these and they have tha advantage of being a nearly invisible hearing protection when not used as headphones
There are some in-ear headphones that use foam ear cushions rather than silicone. For instance, I have a pair of Koss Sparkplugs. I make my own replacement ear cushions from foam earplugs with a noise protection rating of about 30. These do significantly reduce outside noise -- but the Able Planet active noise canceling 'phones are way more dramatic!