Professional grade Trilene Sensation has been trusted by our Berkley pro staff for more than a decade. With extreme strength-per-diameter, it is still flexible and manageable. This strength allows us to make it in smaller diameters for better lure action and castability. The breakthrough multi-polymer nylon formula has less stretch and holds more of its strength when wet compared to other nylon monos for sensitivity and control.Features A professional grade mono- extreme strength, sensitivity, and control. Ultra Strong and Thin- Berkley's highest strength-per-diameter mono- wet or dry Ultra Sensitive- Super sensitivity for detecting light bites Smooth Control- low memory for outstanding castability and handling