One of my favourite patterns by far. I've given the pattern so any one can create them for adults from a woman's size 7-12 or a man's 6-13. Men's size 12 -13 are given separately following the general pattern.
I would recommend that you have some knitting knowledge and can knit both on single pointed needles and in the round on double pointed needles. If you don't know how to knit in the round, this pattern is a great place to start.
The purchase of this pattern allows you to make and sell slippers, but you may not redistribute or resell this pattern.