Woolly Bugger Chenille is made using Antron, a tri-lobal (nylon) filament. Antron is the most popular material in the world for carpets and is ideal for tying Woolly Buggers due to three important factors: Subtle flash and sparkle - Antron's tri-lobal filaments have long been used by fly tyers to create flies with a life-like look. Some anglers theorize that the tri-lobal filaments trap air bubbles, creating a natural appearance to the fly. Although this theory is debatable, no one can argue the effectiveness of flies tied with Antron. Resistance to matting, crushing, and abrasive wear. This speaks to the durability of your flies and their appearance after landing several fish. In short, your flies will be more durable and look better when using Woolly Bugger Chenille. You'll use less material per fly. Because Woolly Bugger Chenille does not compress, you can cover the hook shank with fewer wraps of material. Not only will you tie better-looking flies, but you"ll be able to tie more flies with every package of material.