The workhorse of the Tacky Line, the Original RiverMag Fly Box features automatic storage when time is of the essence. Ten compartments provide specialized organization for each type, size, or color of fly, while full-height walls eliminate mixing across compartments. A strong, magnetic base and clear lid mean you’ll spend less time fumbling with your fly box and more time on the water. The Original RiverMag is the preferred fly storage system of tailwater guides across the Rocky Mountain West.