CO 64

10 cuff rows

40 leg rows

heel flap slip stitch rib:
Row 1: sl 1, k1 repeat across
Row 2: sl 1, purl across
32 heel rows

gusset: pick up 18 stitches.
set up row: k2 last stitch on 1st needle and 1st stitch on last needle. From there standard gusset decrease, with pattern and decreases on odd rows, knit all on even.

48 foot rows.

17 decrease rows for toe.

Kitchner stitch seam.