Even if you take the cable off and continue to play golf with it when it is frozen solid, the experience will be quite unpleasant due to the extreme cold. In addition, wheezing is experienced when walking, but not when standing still, suggesting that some contacts are to blame for the condition (when connecting other headphones, there is no such wheezing). I won't say that they are vacuum because they are designed in such a way that you just need to put them deep into your ear and because of this, they will stay there because the rubber tips are very tight. However, I have never been able to create a vacuum in my ears by using these earplugs, so I won't say that they are vacuum. The sound, which I had hoped would be louder and better, did not, however, live up to my expectations. Conclusion: In my opinion, these headphones are of a poor quality; I paid $800 for them, and I believe that I overpaid for them. If they had cost only half as much, then they would have been comparable in both price and quality. However, I can only give them three points for value.
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