DK

Double knitting yarn, abbreviated DK, is a medium-weight yarn that sits between sport weight and worsted in the standard knitting gauge hierarchy. It typically knits at 5.5 to 6 stitches per inch on needles sized 6 to 8 US, producing a fabric that is neither too thin nor too heavy for most garment applications. The name refers to the yarn weight itself, not a knitting technique; "double" indicates it is roughly twice the weight of lace yarn but lighter than chunky.

DK yarn is produced from a variety of fibers: wool, acrylic, cotton, and blends are all common. Wool DK holds its shape well and provides good elasticity; cotton DK drapes smoothly and suits warm-weather garments; acrylic DK offers affordability and easy care. The yarn is typically wound into balls or skeins of 50 grams or 100 grams, with yardage ranging from roughly 240 to 280 yards per 100 grams depending on fiber content and twist.

In manufacturing, DK serves a practical middle ground. It produces finished fabric quickly enough to keep production time reasonable, while still allowing enough detail work for colorwork, lace patterns, and textured stitches. Tension and consistency matter more at this weight than at heavier gauges; inconsistent yarn diameter or ply twist will be visible in the finished fabric. DK garments finished properly will resist pilling reasonably well, though the outcome depends heavily on fiber quality and how the yarn was spun.

Common problems in DK production stem from moisture absorption in wool blends, which can cause gauge drift during both knitting and finishing. Acrylic DK can felt slightly under high heat if pressed incorrectly. Dyed DK occasionally shows color variation between dye lots, particularly in darker shades, so mills and patterns typically specify dye lot numbers for critical projects. The yarn's moderate weight also means it absorbs dyes unevenly if the fiber preparation is poor.

DK is favored in hand-knitting patterns for sweaters, cardigans, and blankets because the gauge is forgiving enough for amateur work while still producing a professional appearance. In machine knitting and industrial production, DK feeds smoothly through most equipment without requiring tension adjustments suited to very fine or very bulky yarns. It remains one of the most widely stocked weights in retail and wholesale supply, making it the default choice when no other weight is specified.