Interfacing material for a PV material

[Kiltman]

The canvas interfacing in a trad kilt is there to stiffen the kilt and help it keep its shape. The way the interfacing is fan-folded parallel to the pleats gives the kilt rigidity up and down the body (to keep the kilt from buckling) but allows the kilt to flex easily around the body.
Barb

Thanks again Barb. I always learn some thing when you speak about kilts.