Waterproof takes on an entirely new meaning with the Flydrophobic SD fly box. Tacky built a waterproof fly box not only to keep water and moisture out, but a box that would also help to get rid of moisture if any were to get in. We’ve all had times when we put our flies away before they’re completely dry and if that moisture is trapped inside that’s a recipe for rusted hooks and damaged flies. The Flydrophobic SD not only keeps moisture outside of the box, but it’s also breathable, allowing any moisture inside to escape. Tacky's patent pending waterproof breathable system is the first of it’s kind.