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.
Knitted Slippers: Found some bulky weight yarn and whipped up this pattern for some fun slipper socks! I call these my less than 2 hour slippers! I made this pair in about an hour and a half including sewing time!