Cast off very loosely. Cut yarn, leaving a 3 yard length. Fold the top border in half to the inside (knit side) and slip stitch the cast off edge to the bag, just above the last stripe.
What exactly does that underlined part mean? Amy I just supposed to seam the edge in to make a reinforced lip? Is there something special about slip stitching the cast off edge of the bag? How would I do that? I can't to find anything with google-fu.
Thanks in advance!