YO

A yarnover, abbreviated YO, is a knitting technique where you wrap yarn around the needle to create a new stitch without knitting into an existing loop. The result is an intentional hole in the fabric. You perform it by bringing the working yarn forward between the needles, then continuing with your next stitch, leaving that loop on the needle. On the following row, you knit or purl into this loop as you would any other stitch.

The holes created by yarnovers are not mistakes or weaknesses in the cloth. They serve specific purposes in patterned knitting: they form the structural basis of lace, create decorative eyelets along buttonholes or garment edges, and allow designers to build complex open-work patterns. The size and shape of the hole depends on the yarn weight, needle size, and which stitch follows the yarnover. A yarnover followed by a knit-two-together decrease creates a small, clean hole; one followed by nothing creates a larger gap.

Yarnovers appear in everything from delicate lace shawls where they are the primary design element to utility garments where a few eyelets serve as ventilation. They require precision in execution because a yarnover that is too loose will produce an oversized hole that distorts the pattern, while one that is too tight creates tension problems that pull the surrounding fabric. Machine knitting relies on yarnovers at specific intervals to produce fashionable open-work fabrics at commercial scales.

The abbreviation YO is standard across English-language knitting patterns and appears in charts as a circle or other symbol to indicate exactly where the yarnover should occur. Understanding the mechanics of the yarnover is essential for reading and executing lace patterns, which often consist of dense sequences of yarnovers and decreases arranged in geometric or flowing designs. Beginners frequently confuse a yarnover with an accidental loop created by improper tension, a distinction that becomes clear once the resulting fabric shows the intentional pattern taking shape.