The E/C Caddis is absolutely bursting with intelligent fly design ideas. The "E" in the name stands for 'emerging' and the "C" stands for 'cripple', due to the unique way that the fly sits in the surface film and the conspicuous trailing shuck tail. The elk hair wing paired with the parachute-style hackle allows the fly to ride lower in the water than most caddis imitations. The antron tail is supposed to give the impression of a trailing shuck and, once water logged, helps to sunk the rear of the fly and exaggerate the low-rider profile even more.
