This design is to make a pair of mirror image socks. The arrows point in the opposite direction. They can be made using many colors or just a single color.
They are worked from the cuff down following a chart or written instructions. The same chart for the leg and the foot.
Worked as written and to the suggested gauge these are the approximate sizes.
Foot Circumference small 7” / 17.75cm, medium 7.75” / 19.75cm and large 8.5” / 21.5cm.
Gauge is 34 stitches and 44 rounds to 4" / 10cm in sotckinette stitch.
If you need more circumference, increase the needle size. The gauge will change so you will have to swatch.
I am available for help, just message me.