Zpacks Duplex Freestanding Flex KitZpacks Duplex Freestanding Flex Kit transform your Duplex or Duplex Zip tent into a freestanding ultralight shelter for when stakes are not an option. It can be set up with zero stakes in calm conditions, or with just 2 stakes if you want to use the vestibules. Staking the corners or side walls is not necessary except in extreme weather. The poles fold up short, which is perfect for bikepacking and smaller backpacks. They can be rolled up and packed