Our Synergie straggle is a woven blend of metallic, uv and dyeable fibers. All our Synergie straggle has uv fibers and but are blended with different metallic type fibers. The color range changes as the metallic influence dictates. For example, red metallics will blend differently to silver etc... But the different variations certainly give an enhancement to dabblers, boobies, streamers and other lures.