I made these slippers back last fall, as a prototype to possibly reproduce as a Christmas present. I wanted a pattern that was worked in one piece, and I tried several that I found online. Most of them, like these, were worked by starting from the toe in rounds, then switching to rows to create the sides.
Unfortunately, I never really hit on a pattern that I really liked. Of the several practice slippers I made, these came closest after I heavily modified the original pattern. However, I still don't like how uneven the edging is and I'd have to start over guessing to modify the size. So, I haven't written up my final pattern because I don't really plan to use it again.
I still like the idea of slippers for Christmas gifts, so I'm going to be looking for more patterns like this. I may give up on the idea of working them in one piece, but I'd love it if I finally found the perfect one-piece pattern.