New Thin-Walled curtains material

Hello everyone,
in recent update was added new Thin-walled option in refraction atribute, to create materials like soap bubles, leaves, curtains.
I work mostly on interiors so I use a lot of curtains.
Up to now, I used Vray Curtain Material from Library, mapped as 2-sided on surface.

So I am wondering of new approach with thin-walled option.
How to use it properly or how to create better curtain material?

Thanks

Hi pavol pastork
Im very curius too to see how does it work the new thin walled refraction, i use vray for sketchup, but is the same for both
This update changed the way we work with two sided material for leaves, curtains, etc.
And Also how translucency work with the new sss material

Thanks and great question pavol pastork