Attach it to a zinger on your lanyard, vest or anywhere handy and it keeps you floatant ready and accessible. This Lightning Strike Floatant Holder works best on a zinger. You can squeeze any standard sized dry fly floatant tube into it so you can save time on the stream keeping applying floatant to your dry flies. It is low priced, handy and prevents having to search through your vest every time your dries start sinking. Fits Loon and most any standard size floatant bottle.