Ultra Chenille Micro by Hareline

Ultra Chenille Micro by Hareline Ultra Chenille Micro—also known as Vernille—is a small-diameter, ultra-dense chenille that gives your flies a smooth, uniform body with extra durability. Unlike standard chenille, its tight construction won't fray or unravel easily, making it perfect for patterns that take a beating. It’s the classic choice for tying San Juan Worms/'Micro Juans', but also works beautifully on nymph bodies, small leeches, and midge larvae where you want slim profiles and fine texture.