Mechanical Stability: Often overlooked in favor of porosity, mechanical stability is a measure of the cloth’s resistance to stretch and deformation over time. A canopy with excellent porosity can still degrade if the ribs and main surfaces do not maintain proper dimension.

Porosity: Increase in porosity and reduction in performance are heavily correlated. As porosity increases away from the original spec, glide performance and flare are reduced.

Weight: If a competing lightweight cloth is heavier, why use it?

Pack Volume: If a competing lightweight cloth doesn’t actually pack smaller, why use it? Porcher PN9 packs smaller than some competing cloths, even while offering better durability.