The first series of lines to feature the revolutionary AST PLUS slickness additive, Amplitude Smooth series will shoot farther and last longer than any other line on the market. It's slickness down to a science. Amplitude Smooth Trout Standard is a true to AFFTA line weight casters fly line. Built with a mid-length head for exceptional mending and accuracy at long distances. If you love casting this will quickly become one of your new favorites.