One of my students brought this in to my class. I deconstructed it for her and wrote up some instructions that I think will work. But, just in case, I thought I'd check and see if anyone out there knows the pattern? It's mostly garter stitch, with a little ribbing. It appears to have been cast on at the back of the heel and knit back and forth. Seams run along the back of the heel and the top of the foot.