HydroSkin?« socks make great water shoe liners, providing an extra layer of warmth while helping to protect your feet from blisters. Second-generation HydroSkin?« neoprene is more durable and snag-resistant, comfortable and stretchy, and dries quicker than the original. TiCoat?äó membrane contains millions of titanium particles that reflect your body heat back to you. Improved 4-way-stretch 0.5mm outer layer provides extreme mobility and rugged durability. Odor-fighting antimicrobial treatment keeps the funk down.