The classic Comparadun and this more realistic cousin, the CDC Biot Comparadun are the ultimate match-the-hatch flies. Dont be fooled by the simplicity of this fly. The split tail, biot body (nicely segmented like the natural) and CDC wing result in an irresistible combination to trick picky trout. Particularly effective in smaller sizes, this fly is offered in color combinations to match the most important mayfly hatches.