I am always one to share info on products that I like. Well, I like UV Chewee Skin. It is a thin, easy to work with, highly elastic material with UV properties that make it highly reflective and visible. Wind it on an under- body for very cool nymphs, larvae or worms. It comes in an amazing 19 colors. One drawback is the price $4.95 a wack. Available at http://www.feather-craft.com/.