After you’ve used Sufix Tip-Up ice fishing line, you’ll never use another brand again. Sufix tip-up line is technology at its finest, resulting in a virtually indestructible line that is specifically designed to hold up in extreme cold. Our ice fishing line is made with high tenacity polyester braid (HTP), which provides superior abrasion resistance, durability, low stretch and diameter to strength ratios. The trademark Hydro Fusion Process ensures the line sinks quickly and handles exceptionally well in cold weather.