Yarns are packaged with paper ball bands containing information to help you choose the most appropriate yarn for your projects. I outline this information in my e-book “It’s All About The Yarn”. The following are “confusing terms” you may find on yarn labels.
- Yarn Weight – Typically you won’t see the weight category (thickness of yarn strand) printed on the ball band, but some manufacturers will denote the yarn’s weight category by its number (0 – 7), term (lace – jumbo), or both.
- Yarn Length – This is the yardage and meterage (amount in yards and metres) for one ball, skein, or hank. This is the actual length, not to be confused with weight in ounces and grams. Two different 50g balls of yarn will have different lengths. For example, a 50g ball of lace weight yarn may be 420m in length, whereas a 50g ball of sock yarn may only have 175m in length. Yardage and meterage is what is used to calculate the amount of substitute yarn.
- The meaning of the following yarn types is unclear: fingering, sock, sport, baby, and 4 ply yarn. Historically, these yarn types were used as “names” of the yarn. Plies were often used to describe weight, because they were fairly uniform. Today, a single ply yarn can be a very fine lace or a bulky Icelandic wool. Regardless of the weight, all types can be a single or consist of many plies. The following chart is helpful, and notice that in UK, Australia, and New Zealand (not all yarn manufacturers) plies have remained as yarn weights, even though the meaning is no longer clear. Note: The differences between Fingering, Sock, Baby and Sport are small – it’s most important to rely on your gauge when choosing the appropriate yarn for your project.
- DK, Worsted, Aran – These terms are also yarn weights, commonly found on labels, particularly DK, which stands for “double knitting”. DK is a “light (3) weight” yarn and is popular. Worsted and aran are classified as “medium (4) weight”. “Aran” is slightly thicker than worsted.
- Color Codes/Dye Lots – Color codes are the manufacturer’s number for a particular color. Dye lots refer to the dye batch number, or the batch the yarn was dyed in. Because yarn is dyed in batches, it’s not uncommon for the same color to vary from one dye lot to another. For this reason, it is important to buy yarn in one dye lot for your project.
- Some labels, particularly yarns manufactured in Europe may show a rough guide as to how much yarn is required for different garments in average sizes for men, women, and children.
- You may also find a crochet gauge in single crochet (sc) and hook size for a 4 inch square, along with the stockinette stitch gauge.
- Care instructions will be in text, symbols, or both. For symbol reference, check out this chart.
- Flax/Linen – Flax is a food and fiber crop cultivated in cooler regions of the world. Textiles made from flax are known as “linen”. You will often see the term “linen” used on a yarn label, rather than “flax”. The collective term “linens” is generically used to describe bed and kitchen textiles, even those not made from flax.
- Mercerized Cotton – Mercerization is a chemical finish used on cotton that adds luster, and improves its dyeing properties. Mercerized cotton is stronger than regular cotton, and less prone to shrinkage.
- Superwash Wool – Superwash is a finishing process that alters the scale structure of wool, so that wool doesn’t shrink when machine washed. For felting projects, do not use superwash wool. Since the “felting” process shrinks wool to make a dense fabric, superwash wool won’t felt.
- Bamboo Sourced Viscose – Bamboo fibers come from the pulp of bamboo grass. Bamboo yarn is manufactured by two different methods. In one of these methods, bamboo is processed in the same manner as rayon (viscose) fiber, with chemicals and equipment used to make synthetic fibers. Manufacturers are now required to label these “rayon like” yarns with terminology such as “bamboo sourced viscose”.
I hope in defining these “confusing terms”, that this information will help you shop for the best yarn for your projects.