These socks can be made longer just by repeating the chart pattern on the leg. I prefer a short sock so tend to only do one complete pattern on the leg

I guess I should add that they are done mosaic fashion which means you get the look of something hard to knit when in reality you are only knitting one color at a time for 2 rows and slipping the other color where needed according to the chart. They knit up fast as you’re slipping lots of stitches. If you know how to read a chart and you know how to do stripes, then you CAN knit these socks :o)