I recently saw a pair of children's slippers in a small gift shop. Sole was made with what seemed to be Jiffy Grip, body of slipper was flannel, which came up to the ankle and finished off with a piece of knit (the kind on a tube - can't think of the name at the moment). Does this ring a bell with anyone? Thanks so much. They look super easy, but I still need a pattern of some kind.