When shopping for clothing, one of the biggest differences between garments isn’t always the style or the brand; it’s the fabric. Today, most clothing is made from either natural fibers or synthetic fibers, and each comes with its own environmental impact, performance characteristics, and feel. Understanding the difference can help you build a wardrobe that’s better for both you and the planet.
At Sustainably Chic, we gravitate toward natural fibers whenever possible. While no fabric is completely impact-free, natural materials are typically renewable, biodegradable (when untreated), and don’t shed plastic microfibers the way synthetic fabrics do.
Here’s what you should know before your next purchase…
What Are Natural Fabrics?
Natural fabrics are made from materials that come from plants or animals. Humans have been using these fibers for thousands of years to create clothing, bedding, and textiles.
Some of the most common natural fabrics include:
- Organic cotton
- Conventional cotton
- Linen
- Hemp
- Wool
- Silk
- Alpaca
- Cashmere
These fibers are harvested, spun into yarn, and woven or knitted into fabric. While processing methods vary, the fibers themselves originate from renewable natural resources.
Benefits of Natural Fabrics
Natural fibers are often appreciated because they are:
- Breathable
- Comfortable against the skin
- Naturally temperature regulating
- Renewable resources
- Biodegradable under the right conditions
- Less likely to trap odors
Many natural fabrics also become softer over time, making them a great investment for long-lasting wardrobes. That said, not all natural fibers are created equally. Conventional cotton, for example, can require significant amounts of water and pesticides, while organic cotton is grown using stricter environmental standards.
What Are Synthetic Fabrics?
Synthetic fabrics are man-made fibers created using chemical processes. Most are derived from petroleum, making them a type of plastic.
Common synthetic fabrics include:
Because these materials are engineered, manufacturers can design them to be stretchy, wrinkle-resistant, waterproof, or highly durable. Today, synthetic fibers account for well over half of global fiber production, with polyester alone making up the majority of clothing sold worldwide.
Benefits of Synthetic Fabrics
Synthetic fabrics became popular because they’re often:
- Affordable
- Durable
- Stretchy
- Wrinkle resistant
- Quick drying
- Lightweight
- Easy to care for
These characteristics make them common in activewear, swimwear, outerwear, and inexpensive everyday clothing. However, convenience often comes with environmental trade-offs.
Environmental Differences Between Natural and Synthetic Fabrics
One of the biggest distinctions between natural and synthetic fibers is where they come from and what happens after they’re made.
Natural Fabrics
Natural fibers rely on agriculture or animal husbandry.
Their environmental footprint depends on factors like:
- Water use
- Land use
- Farming practices
- Chemical inputs
- Animal welfare
- Dyeing and finishing processes
Responsibly grown fibers such as organic cotton, hemp, and linen often have lower environmental impacts than conventionally grown alternatives.
Synthetic Fabrics
Synthetic fibers rely on fossil fuels.
Manufacturing them requires extracting petroleum, refining it into plastic polymers, and chemically producing fibers.
Unlike natural fibers, synthetic fabrics are not biodegradable. Instead, they can remain in the environment for decades… or even centuries.
Microplastics: One of the Biggest Concerns
One of the primary reasons we encourage choosing natural fibers whenever possible is microplastic pollution. Each time synthetic clothing is washed, tiny plastic fibers can break away and enter waterways through wastewater systems.
Many wastewater treatment plants capture some of these fibers, but not all. Those that escape can eventually reach rivers, lakes, and oceans, where they may be ingested by marine life and enter the food chain.
This issue affects clothing made from:
- Polyester
- Nylon
- Acrylic
- Fleece
- Spandex blends
Natural fibers like cotton, linen, hemp, and wool do not release plastic microfibers because they aren’t made from plastic.
Which Fabrics Are More Breathable?
Natural fibers generally allow better airflow and moisture management than synthetic fabrics.
Naturally Breathable Fabrics
- Linen
- Hemp
- Organic cotton
- Wool
- Silk
These fabrics help regulate body temperature by allowing heat and moisture to escape.
Less Breathable Fabrics
Many synthetic fabrics (including polyester and acrylic) can trap heat and moisture, although modern performance fabrics are often engineered to improve moisture-wicking during exercise. If you’re dressing for hot weather or everyday comfort, natural fibers are usually the more breathable option.
Durability: Which Lasts Longer?
Durability depends on both the fiber and the quality of construction. Synthetic fabrics tend to resist tearing and abrasion well, which is why they’re commonly used for backpacks, outdoor gear, and performance apparel.
Natural fibers can also last for many years when they’re well made and properly cared for. Linen, hemp, and wool are especially known for their durability. Rather than focusing only on fiber type, it’s worth looking at overall garment quality, stitching, fabric weight, and construction.
Are Natural Fabrics Always Sustainable?
Not necessarily. A fabric being natural doesn’t automatically make it sustainable.
For example:
- Conventional cotton can require significant water and pesticide use.
- Wool production varies depending on farming practices.
- Silk production raises ethical concerns for some consumers.
Similarly, some semi-synthetic fibers like TENCEL™ Lyocell are produced using responsibly sourced wood pulp and closed-loop manufacturing systems that recover much of the processing solvent. It’s always helpful to look beyond the fiber itself and consider how it was produced.
Semi-Synthetic Fabrics: Somewhere in Between
Some fabrics don’t fit neatly into either category. Semi-synthetic fibers start with natural materials (usually wood pulp) but undergo chemical processing before becoming fabric.
Examples include:
- TENCEL™ Lyocell
- Modal
- Viscose (Rayon)
- Bamboo
- Ecovero
- Cupro
These fabrics can feel incredibly soft and breathable, but their sustainability depends heavily on how they’re manufactured and where the raw materials come from. Responsibly produced options, like certified TENCEL™ Lyocell, are generally preferable to conventionally produced viscose.
Which Fabrics Do We Look For?
No single fabric is perfect, but these are the materials we most often recommend.
We Typically Prioritize
- Organic cotton
- Linen
- Hemp
- Wool
- Responsibly sourced silk
- TENCEL™ Lyocell
These fibers tend to offer a balance of comfort, longevity, and lower environmental impacts when produced responsibly.
Fabrics We Try to Limit
- Polyester
- Acrylic
- Nylon
- Heavy synthetic blends
Synthetic fabrics still have a place in certain categories, like technical outdoor gear or high-performance athletic clothing, where durability and stretch are important. However, for everyday basics, dresses, pajamas, and casual clothing, we usually choose natural fibers whenever possible.
Natural vs. Synthetic Fabrics: Quick Comparison
| Natural Fabrics | Synthetic Fabrics |
|---|---|
| Made from plants or animals | Made from fossil fuels |
| Renewable resources | Non-renewable resources |
| Usually biodegradable | Not biodegradable |
| Don’t shed plastic microfibers | Shed microplastics over time |
| Naturally breathable | Often less breathable |
| Can regulate temperature | May trap heat |
| Often soften with wear | May pill over time |
| Generally lower plastic pollution | Contribute to plastic pollution |
Frequently Asked Questions
Are natural fabrics better than synthetic fabrics?
Not always, but for everyday clothing, natural fibers often offer advantages like breathability, comfort, biodegradability, and the absence of plastic microfibers. The overall impact still depends on how the fiber was grown, processed, and manufactured.
Is polyester a natural fabric?
No. Polyester is a synthetic fabric made from petroleum-based plastic.
Is cotton a natural fabric?
Yes. Cotton is a natural plant fiber. Organic cotton is generally considered the better option because it’s grown using stricter environmental standards than conventional cotton.
Is TENCEL™ natural or synthetic?
TENCEL™ Lyocell is considered a semi-synthetic fiber. It’s made from wood pulp but processed using a closed-loop manufacturing system that recovers most of the solvent used during production.
Why do natural fabrics usually cost more?
Natural fibers are often more expensive to grow, harvest, and process than mass-produced synthetic fibers. Higher-quality materials and slower production methods can also contribute to the price.
Our Final Thoughts…
Natural and synthetic fabrics each have strengths, but they also come with very different environmental footprints.
Natural fibers like organic cotton, linen, hemp, and wool come from renewable resources and don’t release plastic microfibers during washing. Synthetic fabrics, on the other hand, offer durability and performance but are typically made from fossil fuels and contribute to ongoing plastic pollution.
At Sustainably Chic, we don’t believe every wardrobe needs to be perfect. Instead, we encourage making thoughtful choices over time. Choosing well-made clothing in natural fibers when it makes sense (and wearing those pieces for years) is one small step toward a more sustainable wardrobe.
