UV Polar Chenille comes in mix of colors with long UV fibers make this an attractive material. Brought to you by the folks at Hareline Dubbin, UV Polar Chenille is very easy to use, just wrap it on. The UV factor makes your flies very visible to the fish. Pat Ehlers use it on his Warmwater fly patterns in The Rainy’s Flies catalog like the Grim Reaper and Foam Tail Superworm. Salmon flies, steelhead flies and warmwater flies are all good candidates for UV Polar Chenille.