Gravity is a bitch… just ask a rock climber.
But in the same way that good climbers learn to compensate or lessen the effects of Newton’s fabulous law, so too can hikers and backpackers learn to adjust a backpack to help with hills.
It’s really pretty simple.
By using your main shoulder straps and your load lifter top shoulder straps, you simply adjust the distribution of weight either INTO or AWAY from your body and better balance the overall weight and of the backpack for whether you’re going up hill or down.
Try it and you might be pleasantly surprised as to how much easier it is!