From ..The Purl Bee...
US size 11 needles (or size required to get gauge)
4.5 stitches per inch in rib pattern, slightly stretched
48-inches long by approximately 8-inches wide
Mistake rib is a multiple of 4+3
Cast on 39 stitches.
K2, p2, repeat to last 3 stitches, k2, p1.
Repeat this row. That's it!
Sew in ends, wash gently by hand, block and let air dry.