What's In Your Closet?
Why Fiber Content Deserves a Second Look
Most of us don’t think twice about what our clothing is made from. We shop for style, color, comfort, or price, but rarely pause to check the fiber content label inside a garment. After spending the past year digging into textile research, I can confidently say that what your clothing is made of matters – especially if you’re focused on health, sustainability, or low-tox living.
After my husband and I got married in 2024, we began trying to start a family. Like many couples navigating fertility challenges, I began exploring environmental factors that could impact hormone health. That journey led me to something I had never considered – the potential effects of the materials in our everyday clothing.
Most garments today are made from natural fibers, synthetic fibers, or a blend of both. Natural fibers like cotton, linen, wool, silk, and hemp come from plants or animals. These fibers are breathable, biodegradable, and often gentler on sensitive skin.
Organic options take it a step further – organic cotton, for instance, is grown without harmful pesticides or genetically modified seeds, which can be better for both the environment and our bodies. Synthetic fibers, on the other hand, are human-made, usually from petroleum-based plastics. Common examples include polyester, nylon, spandex, acrylic, and rayon. These fabrics are durable, wrinkle-resistant, and cost-effective, which is why they’re so widely used.
Many brands today offer high-quality clothing using both natural and synthetic blends, and there’s a place for both, depending on your preferences, budget, and needs. But what’s driving the shift toward cotton and other natural fibers for many is comfort, breathability, and peace of mind. Cotton is one of the most widely used natural fibers in the world – and for good reason. It’s soft, durable, and ideal for everyday wear. Organic cotton, in particular, is popular among those looking to minimize exposure to certain chemicals and support more sustainable farming practices.
Some people are also choosing to cut back on synthetics like polyester, which is technically a form of plastic. Research has shown that fabrics like these can shed microplastics that may end up in our waterways, oceans, and even our bodies. While the long-term effects are still being studied, many prefer natural options whenever possible. That doesn’t mean you need to toss your wardrobe or avoid blends altogether. Sometimes, a bit of added stretch (thanks to materials like spandex) is what makes a piece more functional or comfortable. What matters most is being informed and choosing what best aligns with your lifestyle and values.
Choosing natural fibers isn’t about being perfect; it’s about being mindful. Whether it’s picking a 100% cotton tee over a polyester blend, investing in a few organic pieces each season, or simply becoming more label-aware, these small shifts can add up over time.
At the end of the day, clothing should support you – your comfort, your health, your everyday life. If you value low-tox living, sustainability, or just the cozy feel of breathable fabric, incorporating more natural fibers might be worth exploring. We care deeply about what we put in our bodies, so why not care just as much about what we put on them? Next time you shop, flip the tag. Take a second to learn what your clothes are made of. You don’t have to choose natural fibers 100% of the time, but when you do, you just might feel the difference.
Kathryn Brannock
The owner of What Girls Know Best, a brand dedicated to empowering women through storytelling, creative services, and intentional living. She is also the creator of Wifewood, a slow-fashion clothing line focused on natural fibers and low-tox style. For more information, visit wifewood.com.

