Columbia Sportswear Women's Outpost Hybrid 2 Water Shoe 100% Mesh and synthetic Rubber sole Durable, non-marking Omni-Grip rubber outsole offers great all-weather traction Techlite midsole absorbs shock and takes the abuse out of your adventure Super-draining net mesh and micro mesh upper keeps your toes cozy Contour Comfort footbed cushions foot and fights odor and bacteria growth Great for watery adventures as well as conquering the trails