Backpacks Gregory Mountain Products Z45 October 19, 2012 Katie Herrel Share this Facebook Icon Twitter Icon Email Icon Join Backpacker Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Join Backpacker Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Brand: Gregory Mountain Products Gear Reviews Model: Z45 Specs Weight 3lbs. 14oz. Existing model