Used double thread.

Co 60
Knit a border of +/- 4cm using k1, p1.

Follow row 1-20 of The Leafy Beanie pattern.

Add a stitch in every row 19 by pfb the last purl stitch. So in the first increase: p, pfb, k13. The second time you hit row 19: p2, pfb, k13. Etc.

When your leg warmer is between halfway the calf and 4-5 cm under the knee and you get to row 18, jump to row 39. Instead of decreasing, you yo the last stitch before purling. The next row you will purl the yo stitch. So:
Row 39. P2, k9, ssk, k2, yo.
Row 40. P2, k9, ssk, k1, yo, p1.

After row 51, make a border with k1, p1. I made it 20cm long so it’s over the knee. Bo loosely.