This isn't my pattern but one designed by Handwerks. It's a top down pattern in a DK weight which I'm knitting on DPN's rather than circular needles.
Click on the link here and it will take you through to Ravelry or click here to go straight to the pdf.
I'm knitting this pattern whilst on my jolly holidays for a bit of R&R so the whole family should be kitted out quite nicely in warm cosy socks ready for the cold winter months! I'll pop some photos here of my finished socks once done. I just love the rib effect on the heel!