The name says it all with this fly. The Flash Caddis is a great choice when fishing waters with lots of caddis larva. It quickly became a favorite of mine to use on my home waters of Northern Wisconsin where caddis are one of the main source of food for the trout. My favorite way to fish it is as a dropper in a Euro rig or under a Chubby Chernobyl in a hopper/dropper rig. It gets down  quick and with it's hard flashy body, it sure is a fish catcher! 
 
Available in four different hook sizes and five bead sizes allowing you to get the same pattern in many different weights!