Taking up just as much space in our haul bag as a rope, the Black Diamond Perch Double Expedition Fly is a no-brainer piece of our big wall kit. The labeled design makes setup a breeze, getting us covered sooner rather than later. With a tie-down loop at each corner and wall-side reinforcements, this sheet is built to hold strong against high winds, while the sealed seams ensure moisture can't sneak in. We manipulate the awning's moldable wire brim for optimal living space and watch the clouds roll by through the clear-view windows.