From Dyer Supplier:
Add something unique to your sock offerings with this marled sock undyed yarn! The contrast of the dark and light ply is fun to play with during your dye process - accentuate it with light colored colorways or create subtle visual texture with rich, saturated tones. Your customers will love adding this unusual sock yarn to their stashes.

40% Merino Wool, 40% Peruvian Fine Highland Wool, 20% Nylon
Non-Superwash
South American Sourced (mulesing free) Wool
Marled Ply (White with Gray)
Fingering weight
440 yards / 100g skeins
4 ply for durability