Fly Materials Deer Belly Hair - White This is deer belly hair for fly tying. It is a material used to create artificial flies for fly fishing. Uses: This hair is particularly suitable for creating dry flies that float on the water's surface, such as bass bugs and terrestrial patterns (imitations of land insects). Features: This is dyed hair from the white part of a deer's belly. The hair is thick and stiff, so it spreads easily (flares) when wrapped around the hook shank, creating buoyancy. Thank you.