Big thanks for your answers!

I was told that the dens would be the same as my last supplier... But thanks Paul, that explains it!

Thinner diameter hair sounds very interesting, never read or heard about.
Anyone has any experience in this?
I thougt that was europian hair, thinner hairs...
Will defenetly specify that next time!

Is there a list anywere of what cool specs you can put in to a costume system?