5 for years. We placed pads between the rack and roof to avoid any scraping. On to the second oddity. Außerdem sind die störenden Geräusche die In-Ears oft haben wenn sie z. Worst crocs product ever. Not satifsfied. I see one review that talks about an unpleasant resonance at around 3KHz which makes listening unbearable. But, they run large and are cheaply made. I usually exfoliate about three times out of a week and also use a little almond oil for moisture in the mornings as it is not too harsh for the skin and will give it a nice glow. Everything from the case to the battery is of high quality.