The Best Trilene XL Ever! America's Best Selling Monofilament is Stronger AND Smoother than ever! Improved formula has 20% greater knot strength and over 50% greater wet strength! 20% more flexible -- enhancing the Maximum Manageability that has made Trilene XLĀ® famous. SMOOTH CASTING FOR MAXIMUM MANAGEABILITY. The best Trilene XL Ever is the strongest and smoothest. Smooth casting ā Resists twists and kinks. Super Strong - Incredible strength for confidence and control.