Monofilament that's virtually invisible in water. Visibility (or invisibility) in water has always been one of the key factors when choosing a main line, along with strength and castability. Shimano's Technium Invisitec combines these three virtues with Triple Construction technology, so you don't have to compromise! Technium is now available in thinner diameters to meet the needs of every angler. Triple Construction technology offers low memory, increasing the line's sensitivity to the most subtle bites. Exceptionally durable, it allows for a thinner diameter than usual, increasing casting performance. It sinks quickly. Available in metal containers for larger spools.