What are the limitations of natural sportswear?
As mentioned, plastic has some benefits that are hard to replicate with natural fibers. In our experience, especially the weight and the ability to stretch is what limits natural fibers in sportswear. Creating leggings without elastane (or something similar) will make it so that it doesn’t retain its form at all, creating an inferior product. The same goes for socks and thermal layers.
Lately the focus has also been on chemicals that are used for enhancing performance in fabrics, like making it more waterproof, breathable or wrinkle free. While everything is made from chemicals, for these enhancements, harsh chemicals are used like BPA and PFAS. More and more research about the impact of these chemicals are coming out, which is a great thing. While these chemicals are mainly used for plastic sportswear, there are also products out there that are based on natural fibers, but are still coated with harsh chemicals, impacting both their biodegradability and the overall environmental impact.