The updated Perch Double Expedition Fly has the ability to be deployed after the portaledge is set up—so you can adapt when the weather takes a turn for the worse. It can be zipped on even while the ledge is hanging and unzipped during breaks in the storm. A star-shaped design makes for easy set up and a halo pole provides more interior space and head room. Made with Dynex grid fabric with strategic areas of reinforcement that provide lightweight, abrasion-resistance protection from the elements.