2x2 rib refers to K2P2 ribbing. K2P2 ribbing means that you alternate two knit stitches with two purl stitches across the width of the work. Similarly, 1x1 ribbing is sometimes called K1P1 ribbing, and you'd alternate knits and purls across the work. Other sorts of ribbing my be notated as 3x1 (K3P1) or 3x2 (K3P2). The total length and width of the pattern (of whatever ribbing you are knitting) will be specified by the particular pattern that you are knitting. The number (1,2,3...) with the ribbing only specifies how wide the ribs will be.

Knitting can be made more elastic by using stretchy stitches such as ribbing. Ribbing is typically 1x1 or 2x2, but many other types of ribbing are possible, and many non-ribbing stitches are also stretchy.

1x1 ribbing is formed by knitting one stitch and purling the next. Repeat these two stitches to the end of the row. On following rows, "knit the knits and purl the purls." This simply means you should look at the stitch you are about to work and determine whether it looks like a knit or like a purl. Remember that a purl is simply the back side of a knit stitch. Knit stitches look like the letter "V," while purl stitches look like dashes ("-").

2x2 ribbing is very similar to 1x1 ribbing except that you knit two stitches and purl the next two stitches. Again repeat to the end of the row, and again "knit the knits and purl the purls."

There are many kinds of stitches in knitting. There is normal stitch, purl stitch, garter stitch, stockinette stitch, ribbing stitch, seed stitch and lots more. Loads of stitches are actually made up of other stitches merged, chopped and changed.

rib

Yeah this is a ribbing stitch. After you knit a few rows it should be a very clean and neat looking pattern of purls and knits.

Zensah has developed the best compression leg sleeves using a special knitting process and fabric unique to their leg sleeves. The Zensah compression leg sleeves are made with gradient compression which provides wide ribbing in the front for shin support and tight ribbing in the back for calf support.