Wise Badger’s collection of Aran Weight Yarn & Wool includes pure natural fibres, blended yarns and synthetics. Aran Knitting Wool is versatile and is suitable for most types of knits. It is thicker than a double-knit yarn but not as thick as a chunky. It is very like worsted yarn which is slightly thinner. Aran knitting yarns usually knit on 4.50mm – 5.00mm needles.