Nylon & Polyester tent fabrics differences: (1) Nylon is more flexible, stretchable and lightweight, less likely to tear while setting up the tent. (2) Polyester has less stretchability and is thicker and heavier than Nylon but has higher stability and durability. (3) Nylon is an abrasion material that doesn't wear out like other fabrics. Polyester, unlike Nylon, is more resistant to UV Rays. (4) Nylon is lighter than Polyester, making the tent easy to maintain, breathable and popular amongst minimalist campers. (5) In terms of cost, Nylon is more expensive than Polyester. (6) In terms of getting wet, Nylon has a higher degree than Polyester because it absorbs water.