<https://www.flyfishing.co.za/products/omnispool-switch-box#product>
<http://schema.org/description>
"Quickspool:  quick loading and unloading of reels; quick, easy line changes on the water; easy handling in conjunction with rod and reel. Load ’em up.\nTravel: select the lines you need for each outing, clip them together and throw them in your gear bag – find them when you need them; robust but light; protection against salt and grit.\nStack: clip them together for simple organisation out in the field and when you get back to base; label your switchboxes for easy line identification. Sort them, stack them, store them."
<https://www.flyfishing.co.za/products/omnispool-switch-box>