You don't need the same leader for every rig, so the Rio Powerflex Trout Leader Selection gives you the option to switch between the most popular sized leaders for trout—3wt, 4wt, and 5wt. Each uses the same advanced, copolymer material which delivers strength with flexibility, and they all have the same aggressive taper which combines a long, powerful butt for excellent wind penetration and a soft, flexible tippet section for precise presentation.