Are Canvas Backpacks Good for Hiking?

https://outdoorsfaqs.com/are-canvas-backpacks-good-for-hiking/
Canvas backpacks are not good for hiking. The best known backpack brands do not make canvas backpacks any longer. This is easy to see if you check for Osprey, Gregory, Deuter, and Kelty packs on Amazon. You will not find any canvas pack of these brands.

So there is no doubt, synthetic is massively used for modern outdoor packs, and this means mainly polyester and sometimes nylon. It started with nylon that was first introduced to backpacks industry by Deuter in 1968, but polyester became far more popular in the recent decades and years.