Call noise cancellation is very bad. They break. It might be because my toes are protected with the soft and elevated from the hard floor, that my toes nails do not break. They are so warm but dont make your feet too hot, just right. They are bass-heavy and on the warmer side, and a bit veiled on the upper register (as if treble and high-end clarity is slightly diminished). That child must be a BEAST cause the 6 years old I purchased for his feet is nowhere NEAR 9 - 9 1/2. (AC and Fan) Im no audiophile but the sound quality was next level. Nice swimsuit. Top 10 Worst Amazon Buys for me and Ive been doing this a long time. For the price they are good headsets.