Everything is said in the title, the headphones do not take ds (my) ears even without walking at stop it suffice to move the head of two millimeters. I tried all the different bits .. while akg 375 hold very well And they make very ears hurt .. the sound is bad égelement (but probably due to the fact they do not hold and therefore no insulation effect). Maybe it will work with you, but when I see that the same brand propose other that take very well with a good sound, comfortable to the ears, I do not know if it's really me or rather the model. Anyway does not suit me and I found my happiness with the AKG 375