Short Answer: Rayon Can Be Either
Rayon can be made into either a knit or a woven fabric — there isn’t one fixed answer, because “rayon” describes the fiber, not how that fiber is turned into cloth. According to Wikipedia’s overview of rayon, the fiber “can be woven or knitted to make textiles for clothing and other purposes,” which lines up with what you’ll find on the market: rayon jersey knit tops, rayon challis (a woven), and rayon crepe (also typically woven) are all common.
Why Rayon Isn’t Automatically Knit or Woven
Rayon, also called viscose, is a semi-synthetic fiber made from regenerated cellulose, typically sourced from wood pulp. Because it starts as a fiber rather than a finished fabric structure, manufacturers can spin rayon yarn and then either weave it on a loom or knit it on a knitting machine, the same way cotton or polyester fiber can end up as either a woven shirt or a knit T-shirt.
This is a useful distinction to keep in mind generally: fiber content (cotton, rayon, polyester, wool) tells you what the yarn is made of, while knit or woven tells you how that yarn was turned into fabric. The two are independent of each other. Our guide to knit vs. woven fabric covers that distinction in more depth if you want the fuller picture.
How to Tell Which One You Have
If a garment tag doesn’t specify, a quick stretch and look test usually works:
- Stretch it gently. Rayon knit fabric (often sold as rayon jersey or rayon spandex blends) will usually have some give, especially widthwise. Woven rayon fabrics like rayon challis or crepe generally won’t stretch much on their own.
- Check the edge. A cut or frayed edge with loose individual threads suggests a woven rayon. An edge that curls or runs instead of fraying suggests a knit.
- Look at the surface. Woven rayon shows a visible crosswise thread pattern. Knit rayon shows small interlocking loops, more visible when the fabric is stretched slightly.
Common Downsides of Rayon Fabric
Rayon has some well-known trade-offs regardless of whether it’s knit or woven. It tends to wrinkle easily, loses some strength when wet, and can shrink or distort if not cared for according to the label. Because it’s made from regenerated cellulose rather than a more weather-resistant synthetic fiber, rayon also doesn’t hold up to repeated hard wear quite as well as some other fabrics, which is part of why it’s often blended with other fibers.
Is Rayon Cheap Quality?
Rayon isn’t inherently “cheap” in a quality sense — it’s a legitimate, widely used fiber that can feel soft and drape well, often compared to silk. However, rayon garments are sometimes produced at lower price points because the fiber itself is relatively inexpensive to produce compared to natural fibers like silk or wool, and this can lead to an association between rayon and lower-cost clothing. The fabric’s actual durability depends more on the weave or knit density, finishing, and blend than on the fact that it’s rayon.
Why Rayon Often Can’t Go in the Dryer
Rayon loses some of its fiber strength when wet, and the heat and tumbling action of a dryer can cause it to shrink, warp, or lose shape more easily than sturdier fibers. That’s generally why care labels for rayon garments recommend air drying or a low, gentle setting rather than standard machine drying — it’s a precaution tied to the fiber’s structure rather than to whether the fabric is knit or woven.