This slipper can use any nice soft yarn that knits to this tension. It uses Joe’s Toes felt soles for the bottoms and a simple strip of garter stitch. 1 rib of the garter stitch is stitched (or crocheted) to each hole in the sole and the slipper takes shape.

Available as a kit or the soles and yarn are available separately.
Price (at December 2022) Soles from £3.
Complete kit is £15

Updating kit price, and yarns.