This is a cotton-acrylic blend (70 %/30 %), a present by Mia. Apparently, MarLen is the name of the company (I visited their site at Marlen.cz) and not of the yarn but the sign says just MarLen. It is 4-ply, 2 plies are black and smooth and 2 are slightly curly and are dark grey. A simple unproblematic knit. Will get a lot of wear.