Polyester canvas is known for its strength and durability, which surpasses that of both linen and cotton duck. It's less prone to absorb moisture, reducing the risk of warping and maintaining tension over time. Polyester also offers a consistent weave and is generally more heat stable. Additionally, it tends to be lighter and is often treated to be water, stain, and dirt repellent, which enhances the longevity of the artwork. Polyester canvases provide a smooth surface that is great for detailed work and excellent color clarity.