Fashion & Sustainability What is the downside of 100% polyester? January 30, 2026 by pups | Leave a Comment The downside of 100% polyester fabric primarily stems from its synthetic nature. Unlike natural fibers such as cotton, polyester is less breathable, traps heat, and isn’t biodegradable, contributing to environmental concerns. While durable and resistant to wrinkles, its production relies on fossil fuels, and discarded polyester garments persist in landfills for centuries. What Are the […] Read more »