Mohair yarn
Mohair is almost always used together with another yarn, not on its own. It adds halo, that fine fuzzy layer around the stitches, plus warmth without weight. One ball of mohair held with a merino completely changes how the same pattern looks, without making the garment heavy. The yarns here are super kid mohair blended with silk, the finest version of the fibre: soft, lustrous and without the roughness of ordinary mohair.