I dunno, I changed my post anyway. I may have got confused, I looked at the needle sizes and may have thought size 6 rather than 6mm. I know one is fingering, the other is a mohair, which knits up thicker than you'd think. A dk single stranded would probably substitute because you wouldn't really want a regular worsted and a fingering for this. That would make a bulky and probably too heavy, this looks like a light weight drapey jacket.