This is a classic indicator material for euro-nymphing. If you build your own leader this is a great option. Very little if any memory and colors
Amnesia for Fly Fishing – Sighter and Running Line for Salmon and
The Red Amnesia Problem - Troutbitten
Amnesia Fluorescent Butt Material
3 Nymph Rigs to Know: Beginner, Intermediate, and Advanced
This versatile line works great as a running line behind a shooting head for salmon and steelhead fishing. You can also use a small length as a butt section between a floating line and a leader. And the highly visible red color allows it to work as a built-in strike indicator when nymphing. Amnesia loses its monofilament memory when given a good stretch. 100 meter spools.
Amnesia Shooting Line Red
Sunset Amnesia Monofilament 100 m White
The Red Amnesia Problem - Troutbitten
100 Meter Spool of Red Sunset Amnesia 13.6 kg Breaking Strain
Kraft Tool Co- 25 lb. Red Amnesia Memory Free Fishing Line 100