Cortland sighter nylon, 2X, gold
Comparing this solid gold with 2X SA tricolor and Umpqua bicolor sighter nylon (tied 2' of this on with the SA and Umpqua), against my rivers' backgrounds and varying light conditions, and thru my eyes and yellow polaroids, this is as visible as the green of the others and more visible than their red, pink or white parts. I have used this 2X Cortland gold for my whole long leader line for nymphing (only) and like it very well for that.