These were so comfortable from day 1, no break-in period, just comfortable. just what I was looking for Out of nowhere. The quality of the sound is very good. I have the Klipsch X10 headphones and none of the tips worked in my ears. Theyre huge on me, to the point that if I lean my head forward they start slipping off. Im very pleased with it and have no regrets. However, as I used the product, I noticed that it started to scratch the back of my AirPods Pro case. What I love is the string that connects to the airpod! 5minutes .