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The Mock Ribbing Slip-Stitch Pattern is a really fun slip-stitch pattern to knit. In fact, this pattern is a good, all-purpose pattern that can be used for many different types of knitting projects.
Furthermore, you will find that the stitch pattern works equally well in both heavy and fine yarns.
Having said that, the pattern definition on the front side does not work as well when knitted in cotton.
This slip-stitch pattern might superficially resemble ribbing. However, due to the strands that are carried across the front, it has very little elasticity.
In addition, the completed fabric also has a tendency to curl up along the sides. Although, you can easily counteract this by adding a selvage edge.
The reverse side of the knitted fabric has a pretty ribbed effect, as well as a very nice texture.
This slip-stitch pattern is super easy to knit. As a matter of fact, the pattern is just knitted over two rows so you can easily memorize it.
Even so, it is slightly unusual in that you have to cast on an uneven number of stitches.
If you are not already familiar with slipping stitches, you might be interested in this tutorial: Slipping Stitches Knitwise or Purlwise.
The tutorial takes you through all the basics of slipping stitches, step by step.

Techniques Needed for Mock Ribbing Slip-Stitch Pattern
Abbreviation Description Tutorial
k knit Knit Stitch Continental Style
Knit Stitch English Style
p purl Purl Stitch Continental Style
Purl Stitch English Style
Other Abbreviations Used
ws wrong side
rs right side
rep repeat
st(s) stitch(es)
wyif with yarn in front
Instructions (Knitted Flat)
Odd number of sts.
Row 1 (WS): K1, * p1, k1; rep from *
Row 2: P1, * sl 1 wyif, p1; rep from *
Repeat rows 1 and 2 until you reach the desired length.