is a water-repellent elastomer!
Hmmm...basically that means coating, beading, and forcing water OUT. The scientific breakdown can be found HERE.
The DCS crew lives that northwest style and we ALWAYS need a reliable source of waterproofification for our outdoor gear. NikWax does an amazing job (and we weren't paid to say that). In fact, we were paid to make stickers! As it turns out, these digital die-cut stickers are waterproof & outdoor rated (UV protected, no fading) for 3-5 years. No additional protection needed.