Trust Sennheiser to offer a great pair of headphones that can be used as a headset. The tradeoff is its not going to feel like youre walking on clouds, but never at the end of the day have my feet been sore or fatigued. Aha! #1 DO NOT USE A LIGHTER OR TORCH! I may purchase another pair , depending when i get my refund. You will love it Fits are all the same size. However, this pair is much lighter weight and when worn just to try them on the first time, did not keep my feet warm at all. To go to the large size would have been too large and I didnt want that. It "fails" every time though, when the streaming is interrupted or during buffering, or any skip of sound like that.