Collection: 4 ply yarn

I've put all the yarns I'd knit using a 4 ply pattern here, that includes sock yarn as you don't have to knit that into socks if you don't want to

That's 14 to 30 wraps per inch (wpi) or a suggested tension of 27-32 stitches to 10cm/4" on 2.25mm to 3.25mm needles