Spiderwire Ultracast Fluorobraid Superline, , All the attributes of a premium superline - in the 1st true sinking braid All the attributes of a premium superline - in the 1st true sinking braid More direct line profile from rod top to bait; Lures run deeper; Low co-efficient of friction for quieter retrieves Gore Performance Fluor polymer Fiber for density and sinkability Highest grade Dyneema for strength; ultimate sensitivity