I bought these headphones to finally have peace in my weekly trips by train and not be bothered by morons operators. The result is quite positive: the insulation is good, with the atria to triple flanges, better than the Philipps I had before. Disadvantages: it from time to time cause itching in the ear canal, but that's true for all intra headphones must be a relentless hygiene atria. I clean almost daily in hot water.
Back in the comment 3 years later: a wire was torn from a listener, despite the care I took in not shot ==> despite the price, it is not as strong as low-end 20, more than 100 fichus Up :-(