These are sized for adult feet, up to women's size 11.  A slightly larger
        size follows.

You need 4 skeins of yarn, mix or match and size 13 needles.

Using 4 strands of yarn as one, cast on 30 stitches.
Rows 1 - 13: Knit all stitches.
Rows 14 and 15: Bind off 5 stitches, Knit to end.
Rows 16 and 17: Bind off 1 stitch, Knit to end.
Rows 18 - 25: Knit all stitches.
Row 26: Knit 5, K2tog, Knit 4, K2tog, Knit 5.
Rows 27 - 32: Knit all stitches.
Row 33: K2tog across.
Row 34: Bind off all stitches.

This is the toe area.

Fold slipper in half, bringing the back seam (your cast on stitches) together.
Starting at top: Slip stitch top of foot and up the front of leg.

Slip stitch back of slipper together. (The cast on stitches.)

Work in all ends of yarn.