One of the single-most impactful flies ever developed by the great Craig Mathews of Blue Ribbon Flies. Simple yet sophisticated, the X Caddis was designed to mimic freshly emerged caddis in the midst of shedding their shuck. The introduction of the synthetic tying material Z-lon changed the game of fly tying for the way it diffuses light and mimics the casing of an emerging insect. If you were to choose one single caddis dry fly to fish for the rest of your life… The X-Caddis is surely in contention.