From O-wool, I think in a DK weight (?). 3 skeins made for a 78.5 x 6″ scarf (unblocked). Took forever to finish. (Slight exaggeration there. But I didn’t start it until I finished FO 18, so that’s now long it took.)
Mods and other info are in early posts about the scarf. If I get energetic later, I’ll copy/paste them here.