Hello Dave! Thank you for your response and advice! The weight is unknown- unfortunately, I don't own a scale at the moment. The vault is the BearVault BV500 / 700cu.in.). Although, it is by far the heaviest thing in the pack. Everything else is low/ultralight weight, including my tent/camping set up. I'll be carrying two liters of water at a time (there is tons of water on this trail), with one liter on each side of my pack externally packed.