Went down to a 2.5mm needle for this one (love my 9” Chiaogoo circular). Glad I did as this Lidl yarn is verging on DK, rather than sock weight.

Great pattern, and I’m getting better at doing the heel and flap. Not mad about the yarn - it’s a bit scratchy, though that could just be dressing in the yarn. I’ll see what it’s like once I’ve washed the socks.