Columbia Ventfreak Outdry Women's Multisport Shoes Synthetic Textile Upper - With welded textile overlays provide support and protection. Breathable Mesh - Keeps the feet cool and dry allowing them to breath. OutDry Waterproof - One piece breathable membrane seals out water. FluidFrame - Provides multidensity underfoot support. Techlite - Lightweight midsole for long lasting comfort, superior cushioning, and high energy return.