what kind of kilt is it (who is the maker)? What material was used?

PV has VERY LITTLE problem with wrinkles. High quality wool ($50/yard + kind of wool... not wool blends) doesn't have a big problem with wrinkling either. Cotton / poly blends shouldn't wrinkle that much either, but do have problems holding the pleat.

Cotton and/or canvas kilts WILL wrinkle. Other fabrics wrinkle in varrying degrees... It's a matter of the property of the fabrics being used.