68 stitches: Starting from 16, increase every round 4x, increase every 2nd round 7x, increase every 3rd round 2x.
60 straight rows after toebox, then 15 increases every 2nd row for the gusset.
Double stitches for the heel turn until 10 stitches remain in the middle.
54 straight rounds after the last decrease row for the leg. Then 2 rounds in grey. The next round in blue is knit with 3mm needles to accommodate later the bind off. 23 blue rounds total (including the 3mm). 1 round grey knit, one round grey purl, one round blue knit, 20 rounds k2, p2. Bind-off with stitching into the 3mm bumps. Use the k2togtbl bind-off to keep it stretchy.

2024/11/20
First sock finished, it does fit, Rolf likes it and it consumed a little less than half of the yarn (57g of 106g left)

2024/12/09
Second sock finished. Total weight 100g