Synthetic fabric is any textile made from fibers produced entirely in a laboratory, typically from petroleum-based polymers rather than natural sources like cotton or wool. Polyester, nylon, spandex, and acrylic are all synthetic fabrics. They dominate modern clothing, activewear, and home textiles because they can be engineered for specific properties like stretch, moisture resistance, or durability that natural fibers can’t always match.
How Synthetic Fabric Is Made
All synthetic fabrics start as raw polymers, which are long chains of repeating chemical units derived from petroleum by-products. The most common production method is called melt spinning: the polymer is heated until it melts, then pushed through a device called a spinneret, which works like a showerhead with tiny, precisely shaped holes. As the molten polymer passes through these holes, it cools rapidly and solidifies into continuous filaments. These filaments are then stretched, twisted, and woven or knitted into fabric.
This process gives manufacturers remarkable control. By changing the shape of the spinneret holes, the chemical makeup of the polymer, or the way filaments are combined, they can produce fabrics that feel silky, coarse, stretchy, or rigid. That versatility is why synthetic fabrics show up in everything from sheer stockings to bulletproof vests.
The Most Common Types
Each type of synthetic fabric has a distinct chemical structure that determines how it feels, performs, and holds up over time.
Polyester
Polyester is the most widely produced synthetic fiber in the world. Its fibers are hydrophobic, meaning they repel water at a molecular level, so sweat evaporates from the surface quickly rather than soaking in. This makes polyester a go-to for activewear and hot-weather clothing. It also holds dye exceptionally well. Colors resist fading even after repeated washing or extended sun exposure, which is why outdoor furniture cushions and flags are often polyester. The trade-off is texture: polyester tends to feel crisper and more matte compared to nylon, and some people find it less comfortable against the skin.
Nylon
Nylon was the world’s first fully synthetic textile fiber. Its polymer chains contain chemical groups called amides, which give it a softer hand feel and make it more receptive to dye for rich, vibrant colors. Nylon wicks moisture effectively but takes longer to dry than polyester because it absorbs slightly more water before becoming saturated. It’s a popular choice for yoga pants, hosiery, and lightweight jackets. One weakness: nylon degrades faster than polyester when exposed to chlorine or harsh detergents, and it can pill more readily with rough handling.
Spandex
Spandex (also sold as elastane or Lycra) is rarely used on its own. Instead, it’s blended into other fabrics at 5 to 20 percent to add stretch and recovery. A typical pair of athletic leggings might be 85 percent polyester and 15 percent spandex. Without spandex, most synthetic fabrics would feel stiff and restrictive during movement.
Acrylic
Acrylic mimics the look and warmth of wool at a lower cost. It’s lightweight, holds color well, and resists moths and mildew. You’ll find it in sweaters, blankets, and craft yarn. It doesn’t breathe as well as wool, though, and can feel scratchy in cheaper versions.
A Brief History
Synthetic textiles have a surprisingly short history. The first major commercial synthetic polymer was Bakelite, a hard resin invented in 1907, but it wasn’t a fabric. The real breakthrough came from chemist Wallace Carothers working at DuPont. His research led to neoprene, the first synthetic rubber produced in the United States, in 1932, and then to nylon, which DuPont began manufacturing commercially on December 15, 1939.
Nylon stockings were the product that introduced the public to synthetic fabric. Sample pairs were sold to DuPont employees in Wilmington, Delaware, in March 1939. When nylon stockings launched nationwide on May 15, 1940, nearly 800,000 pairs sold on the first day. Polyester followed in the 1950s, and spandex arrived in the early 1960s. Within a few decades, synthetics had reshaped the entire textile industry.
How Synthetic Fabric Differs From Natural Fabric
The core difference is origin. Cotton grows on a plant, wool comes from sheep, silk from silkworms. Synthetic fibers are assembled molecule by molecule from petrochemicals. This gives synthetics several practical advantages: they’re generally stronger, more resistant to shrinking and wrinkling, faster drying, and less expensive to produce at scale. Polyester and nylon have melting points between 215°C and 260°C (roughly 420°F to 500°F), which means they hold up to moderate heat but can melt or warp under a too-hot iron or in a dryer set on high.
Natural fabrics tend to breathe better and feel softer against the skin. They also biodegrade, while most synthetics do not. Cotton and linen absorb moisture directly into their fibers, which can feel cooler in casual settings but means they stay wet longer during intense exercise. Many modern garments blend synthetic and natural fibers to get the best of both worlds.
The Microplastic Problem
One of the biggest environmental concerns with synthetic fabric is microplastic shedding. Every time you wash a polyester shirt or nylon jacket, tiny plastic fibers break loose and flow into wastewater. Research published in PLOS One found that a single wash cycle can release anywhere from about 8,800 to over 6.8 million microfibers depending on the garment. On average, synthetic fabrics shed roughly 514,400 microfibers per kilogram of textile per wash.
Polyester sheds about six times more fiber mass per wash than nylon. Thicker fabrics shed more than thinner ones for both materials. Scaled up, researchers estimated the average household generates around 135 grams of plastic microfibers per year, roughly 5.3 million individual fibers. Across Canada and the United States combined, that adds up to an estimated 22,000 tonnes of microfibers entering wastewater treatment plants annually.
These fibers are small enough to pass through many filtration systems and end up in rivers, lakes, and oceans. You can reduce shedding by washing synthetics less frequently, using cold water, running shorter cycles, and using a microfiber-catching laundry bag or filter.
Recycled Synthetic Fabric
Recycled polyester, often labeled rPET, is made by breaking down used plastic bottles or old polyester garments and reforming them into new fibers. The environmental benefits are significant. Life cycle assessments have found that producing recycled polyester can cut greenhouse gas emissions by 60 to 71 percent and reduce energy consumption by up to 84 percent compared to making virgin polyester from scratch. Fossil resource use drops by roughly 85 percent.
Recycled polyester performs identically to virgin polyester in finished garments. The limitation is that the recycling process itself can only be repeated a limited number of times before the polymer chains degrade too much, and recycled synthetics still shed microplastics in the wash. It’s a meaningful improvement, not a complete solution.
Caring for Synthetic Fabrics
Synthetics are generally low-maintenance, but heat is their enemy. Because these fibers are thermoplastic polymers, they soften and eventually melt at high temperatures. Always use a low or medium heat setting when ironing polyester or nylon, and avoid high-heat dryer cycles. Tumble drying on low or hanging to air dry extends the life of synthetic garments significantly.
Washing in cold water preserves both the fabric and reduces microfiber shedding. Avoid bleach with nylon, as chlorine breaks down its fibers over time. Polyester is more chemically resistant and tolerates a wider range of detergents. Both fabrics hold their shape well over hundreds of wash cycles, which is one reason synthetic activewear and workwear outlast many natural-fiber alternatives.