How do breathability ratings compare between canvas and polyester fabrics?

When comparing the breathability of canvas and polyester fabrics, several factors come into play. Canvas, a natural cotton-based material, generally offers moderate breathability due to its loose weave and organic fibers. It allows air to circulate, making it suitable for warm-weather garments and accessories.

Polyester, a synthetic fabric, tends to be less breathable because its tightly woven fibers trap heat and moisture. However, modern polyester blends often incorporate moisture-wicking technologies to improve airflow, making them competitive in performance wear.

Breathability ratings depend on fabric density, weave type, and treatments. Canvas typically scores higher in pure breathability tests, while polyester excels in moisture management. For activities requiring ventilation, canvas may be preferable, whereas polyester's quick-drying properties benefit high-intensity scenarios.

Ultimately, the choice depends on intended use—canvas for casual breathability, polyester for active moisture control. Always check specific fabric specifications, as manufacturing techniques can significantly alter performance.