Do I need a pack liner and a rain cover?
Do I need a pack liner and a rain cover? Do you need both a pack liner and a pack cover for backpacking? Probably not. It's excess weight and both more or less accomplish the same thing. (Plus, a poncho and pack liner combo offers the true winning option—stay tuned for more on why!)
What material is best for backpack rain cover?
Ripstop nylon (which is also very durable!) and polyester are great materials for heavy downpours because they are tightly woven together. Water-repellent surfaces on the cover made of polyester keep you dry.