The ultimate pattern for ultra-selective trout in smooth, glassy waters, these CDC Dun patterns have saved the day for us on many occasions. Places like Silver Creek or the Henry's Fork were made for patterns like the CDC Dun. Don't use regular gel-type floatants on the CDC. Use powered floatants like Loon Top Ride, Frog's Fanny, or a dry fly patch like the C&F Rubycell Fly Dryer. Size 16 pictured.