Bought last weekend (APRS m'tre trs is afraid of Transmusicales ... 3 days later, a tired ears) I bought these plugs in a audioprothsite.
The price is reasonable (22 euros), sold a small pouch like "wallet grandpa" and a priori "Linari the attnuation" (gives-20dB) is guaranteed.

First test (simulation "laboratory" in concert ... not so) rather exciting: it's easy to almost comfortable (at least, far more than the foam stuff) was still in place and c ' is super effective: trs attnuation good overall but we still hear everything without deformation (at low cymbals, guitars vote ...).

I think I will return to the test ds-size ... but for now, I am convinced by this product ... remaining one-time user! If I had rpter high volume weekly and go even rgulirement concerts than I am dj caps would be molded directly!

PS: On my "plugs" I think the black plastic part (see photo above) is enjoyable replaced with clear plastic ...
Edict of 17/03/06: Test APRS-size long concert nights ...
Really it's super comfortable and just be ... dsagrable Small BMOL however, if the linear attnuation seems vritablement means a lot his own breathing and low rsonnent with which the bones of the CRNE ... A share has nothing wrong!