Genius slipper design where you knit a short "scarf", fold and sew onto your bottom. Garter stitch extra chunky yarn about wide, and however many rows you need, then sew into the 2 layers of the felt bottom.
Pinner wrote: the better bind off (Elizabeth Zimmerman). Pinner wrote, "love, love, love this bind off. I use it for the bottoms of sweaters when I knit from the top down and anywhere else you need a nice stretchy edge.