Yak
“Warm, soft, and naturally matte”
Fine yak down can feel soft and warm without being heavy. Coarser guard hairs can make the finished fabric feel very different.
Like fine wool with rich warmth and less shine
Low light reflection may give the surface a calm, matte look. The same color may appear slightly deeper and more muted.
A fine nap may give the surface a softly brushed look. How visible it is depends on fiber fineness, yarn construction, and finishing.
It may drape softly while keeping some loft.