Gear Reviews Mountain Laurel Designs Soul Bivy Existing model October 20, 2010 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: Mountain Laurel Designs Model: Soul Bivy Specs Weight 8oz.