Gear Reviews MSR AC-Bivy Existing model October 17, 2011 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 ©Earl Harper Brand: MSR Gear Reviews Model: AC-Bivy Specs Weight 1lbs.