Yarn Weight
The thickness of the yarn, often categorized from lace (thinnest) to jumbo (thickest).
Explanation
Yarn weight describes how thick the yarn is. Standard categories include lace (fingering), sport, DK (double knitting), worsted (aran), chunky, and super chunky/jumbo. The thickness affects which needle size you should use and how quickly the project will progress. Thicker yarn allows for faster progress but fewer details, while thinner yarn takes longer but allows for finer details. Yarn weight is closely linked to yardage: thinner yarn has more yardage per gram.