Now as far as sweat - proofing goes these don't officially have an IPX rating, but they do have a double hydrophobic coating to prevent sweat from eating away at them. (soundguys.com)
Protein - protein complexes show good complementarity in surface shape and polarity and are stabilized largely by weak interactions, such as burial of hydrophobic surface, hydrogen bonds, and van der Waals forces. (britannica.com)
These boots are made of hydrophobic materials. (geekwrapped.com)