Harken Women's HydroFlux fit designed specifically for women's feet. Harken's One-Way Drainage System: A full-length 9-point drainage system drains water away from the foot through a series of internal channels in the sole. The one-way system prevents water and debris from reentering the shoe though the drainage ports. • Harken's Radial Traction Zones: The full 360-degree pattern of siping allows siping flexion of the sole in all directions. This pattern is placed under the 3 main pressure zones of your foot to give each area independent traction. Used in combination with a special rubber compound, traction is greatly increased.