UV2 Goose Biots will add some attractive color for your flies. Biots are most often used as a tail material in nymphs. They are also suitable for antennae, wings, bodies and wingcases.

Packages contains approximately 4 pieces. Stripped feather length is about 10-15 cm and barb length 1-2 cm. Colors in assortment packs might vary slightly.

Ultravision UV2 is a proprietary process of dying that enhances material, adds visibility and natural color spectrums. It doesn't automatically mean that the material will shine when pointed with UV light. Double dye process gives UV2 materials and flies the added UVF/UVR ultraviolet wave lengths. It works in the following two ways:

• UVF is the UV Fluorescence. It is common on everything from street signs to bass lures. Lighter colors have stronger UVF effect on human eyes. Darker colors do not have this effect.
• UVR is the UV Reflectance. It is a spectrum of wave lengths humans can not perceive yet is extremely common in the animal and insect world. UVR allows mayflies to find mates, and bees to find flowers. Many male birds and bugs have a strong natural UVR signature.