Bushwalk Australia

Interesting TED talk on use of nano technology for making materials hydrophobic. Not sure about the breathability.

http://www.youtube.com/watch?v=z5L_vPkorBU

give it a go if you can afford it
http://www.ultraeverdrystore.com/

if its so hydrophobic i wonder if it would work in clothing, would it let your sweat pass through to the outside?

says here exposure can cause skin irritation, it's pretty toxic stuff when you apply it and its degraded by uv light relatively quickly.... which is maybe why we havent heard the outdoors industry leap at it...
http://arstechnica.com/gadgets/2013/03/ ... dry-in-hd/