The Windigo Signal Bag is built from waxed canvas, it is tough, reliable, and weather resistant all around. Use the Signal Bag as a divider or pouch inside another pack or bag. It’s compatible with our XP snap Accessory Bags and bigger packs, too, like the Voyageur or Garment Cover. String some cord (our 75in length works great) through the solid brass rings to make a set of basic shoulder straps— voila, you’ve got a little daypack! Or, lash it onto the outside of a bigger pack for a zip top lid (our Leather Accessory Straps do the trick).