Fly Materials Hareline Crystal Dubbing 3-Piece Set Material: A blend of natural rabbit fur and synthetic fibers like shimmering Antron and Crystal Flash. Uses: Commonly used for subsurface flies such as nymphs, stoneflies, caddis emergers, and pupa patterns. Effect: The fibers reflect light underwater, creating a lifelike shimmer (halo effect) similar to real aquatic insects. Ease of Use: This dubbing material is very easy to work with and can be easily wrapped around the tying thread to form the body of the fly. Thank you.