Brook Fishing Equipment, Outta The Box Fly Patch with Silicone Inserts, Out Performs Foam, Keeps Flies Secure, Available in Slit & Non-Slit Styles MODERN TECHNOLOGY - Features silicone inserts, easily outperforms and outlasts all foam inserts SLIT VERSES NON-SLIT  Slit, place the bend of the hook inside the slit, simply push down and your fly will be secure, Non-Slit works like foam, simply push the hook into the silicone for a secure fit SILICONE INSERTS - Will not tear or bore out like standard foam fly Patches, keeps barbed and barbless flies securely in place and does not hold water preventing hooks from rusting EASY ACCESS  Large spacing provides fast easier access to your flies, perfect use for pre-tied flies with leaders and droppers, holds 189 flies CONVENIENT- Perfect for Guides, Outfitters and Boaters, no more opening and closing your fly box each time you change your flies, speed up delivery, simply load the Outta Box with chosen selection and go fishing