Loaded 5-Mayfly S/M Dry Fly/Nymph-Slim Fly Boxes.We like to make things easy and efficient for you when buying our flies and having fun catching untold trout. So we have carefully selected and made up these loaded new Generation silicone fly boxes in various sizes that come free with our fly box security lanyard. Each box is fully loaded and ready to go, with various needed selections of what we call our meat and potato flies of choice. Each box comes with a selection of our smaller sized dry flies