Upavon Two Tone Straggle Hackle combines two complementary colors in a single material using the Pure Colour formula, producing the kind of blended, layered visual effect in the water that single-color straggle can't replicate. The soft, mobile fibers breathe and pulse on the retrieve, making it a natural choice for streamer collars, wet fly bodies, and stillwater lure dressings where movement and color complexity work together to suggest life rather than just bulk. Each fiber moves independently rather than clumping, which keeps the fly's profile alive even at slow retrieve speeds.