DFI has designed a new generation of "searcher" flies built to imitate at least two hatches; in this case, a mayfly and a caddis, and get fish to take on their preference. The new world of dry fly fishing challenges the belief that you need a hatch. Fish this bug with NO hatch in holding water, and you'll be shocked to see what's calling. The fish will suddenly appear and eat this pattern. It's a concept that catches fish!! One size (#16), except for PMD and Callibaetis (also #14) 8 different colors.