Seaguar Fluor Premier Leader 40lb/25yd Leader Material S40FP25 30% better knot strength than leading competitor fluorocarbons. A fantastic introduction to Fluorocarbon, Seaguar's Red Label Leader is strong yet extremely soft and sensitive. Red Label offers remarkable impact strength; it is suitable for both fresh water and salt water. As with all 100% Fluorocarbon products, Red Label is much less visible underwater than monofilament line and virtually invisible to fish. Red Label is also UV resistant, chemical resistant, non-absorbent, high-density and impervious to cold conditions. Made from 100% Seaguar resins and produced using our proprietary extrusion process.