I left theAir by crazybaby​ ​
Then I remembered them the other day while jogging, as the earphones I’d used for many years had stopped working. Come to think of it, these were perfect to wear for sport.
So I tried using them again and tried pairing with my phone really quickly, and found no problem wearing them with the sound quality when running. Rather, the quality of sound is better than ever.
And sure enough they don’t fall out, even when running. This is a real surprise.
They also have noise-cancelling but that didn’t bother me to be honest.
Although it seems a common problem is how easily they break, for now they’re probably the best earphones for running. And within my own margins.