Worsted weight yarn falls into the medium-weight category as defined by the Craft Yarn Council of America. You may sometimes see the symbol number 4 on the label of some yarns.
In the classification of yarn weights, worsted weight yarn is heavier than Light Worsted Weight, DK weight (or Double Knitting weight), Sport weight, Baby yarns, Sock yarns, Fingering weight and Lace weight yarns. It is lighter than Chunky weight, Bulky and Super Bulky weight yarns. Worsted weight yarn is also sometimes known as 10-ply yarn in some countries.
Worsted weight yarn is very popular with knitters and crocheters because of its versatility and its availability in many colors and yarn choices. Worsted weight yarn works up quickly, and is suitable for a wide range of projects such as blankets, throws, scarves, shawls, garments, cowls, gloves, mittens, sweaters, accessories and home decor. The possibilities are endless...!