Es comodo al estar usandolo por varias horas (6-8) al día, se escucha muy clara la voz y la cancelacion de ruido es bastante buena. Really, really like the performance. Especially God for removing tree pollen in spring and summer. It doesnt sit flush against the wall so youd have to add extra nails other than the hooks that are given. And I havent noticed my feet sweat in them. There is a company on Amazon that is selling fakes and if you read others reviews and you will be able to compare the difference I thought Sun Sans just started making their stuff cheaper and more uncomfortable because when my daughter tried them on usually they fit like a glove instead these were poke at her feet rubbing on them the class was cheap the outsole was not spongy like the sun Sans so then I looked on Amazon for a different style and I came across the reviews saying that they were fakes The item was shipped very fast as well. Recommending to all my friends. Ok so right of the bat Im going to say I tried this after using A-10s for about 8 months. Battery life and noise cancellation are superb.