Rio Mainstream Bass Fly Line Midlayers The secure roll-top closure helps

The secure roll-top closure helps seal out water while giving you access to a spacious 38-liter main compartment

and fishing all day

Two grip styles with composite inserts improve comfort and durability

and ready for anything the day throws your way

Smoother Strips

Rio Mainstream Bass Fly Line Midlayers The secure roll-top closure helpsRIOs Mainstream bass fly lines have been developed to meet the overall needs of the average and novice fly fisher, and are designed to optimize rod performance with slightly heavier and shorter head lengths. Every Mainstream line undergoes the same rigorous production processes and quality control standards as all RIO fly lines, and is made in RIOs Idaho manufacturing facility. Each bass line is built with a warm water coating over a supple memory