Brady, not sure I've seen what I'm thinking of in this thread. I want a tubular bag to hold a tarp tent and poles, 26-28" long x 4" diameter, with an opening at one end. I was thinking the opening would fold-over closed like a dry bag, effectively making the closed length adjustable; so when open the length would be, say, 32"; and a buckle to hold the folded end closed. And one sewn-in strap along the length of the bag with a cross stitch every 2", through which tie-down straps could be fed through. Eh?
Edit:
Perusing all your pics, I think this the below is a good, flexible design. I'd like one like this with a max dimension 28"x6", compressible down to 24"x3" (or even smaller is fine). Will that work? In Orange. PM sent.
