To save as much as 10 to 12 pounds with with the minimum of effort, look at The Big Three. 1) Backpack, 2) Tent/Shelter, and 3) Sleeping bag (or quilt). The lighter versions of these are just as functional as their heavier counterparts. They will carry your load and keep you warm and dry. The only thing you stand to lose is a bunch of weight off your back.
And most people do not enjoy being a pack mule. It is rarely the highlight or happiest memory of a trip. Alternatively, unburdened from the misery of carrying a heavy pack, folks become joyful and alert—in the best state of mind to appreciate everything around them—the reason they went backpacking. The Big Three is the fastest way to achieve that goal.
The Big Three