Meaning if you stretch the fabric, you can see every line in the fabric. You have to register to use the software. I have Focal Pros and absolutely think they are great, I would give those headphones 5 stars. I finally find these on Amazon and after reading the reviews I felt good about ordering them. Kinda hard to instal but overall it?s a good product. I should?ve ordered the 11. They are less ?flat? sounding and more lively and fun. And the ?guide numbers? mentioned were also wrong for my vehicle. Now if I put the earbuds in the case and give them a good push to make contact they seem to reliably charge and work. 5M, but I couldn?t even get my toes in and had to return them.