I use these headphones for over 5 years to run. I have no particular problem to install them. They remain in place even after 2 hours of racing. It is true that after 1 h the tips are a little ears hurt. Good sound. By cons after 2 years, the headphones deteriorate with perspiration. I changed 2 times because the earphones are the current noise. Inside the headphones, I had a little noise "Maracassé".