the membrane
The perforated rubber sole contains a special microporous membrane that absorbs and expels sweat without letting water in.
membrane's micropores
The micropores are larger than water vapor molecules, but smaller than water droplets - keeping water out and feet dry. Sweat can pass through the membrane as water vapor and out through the sole.
the result
The gradual elimination of humidity from the inside of the shoe creates the ideal microclimate for healthy feet. No more bad odors. Your feet will stay warm and dry in winter and cool and dry in the summer season.