Montrail Womens Fluidfeel ST Cushioned Running Shoe 100% Textile/Synthetic Imported Synthetic sole Designed for road and off-road surfaces Open mesh construction with seamless overlays for fit and support Fluid foam midsole with medial pronation control by fluid post technology and external midfoot torsion bar Ride heights 18 millimeter heel and 10 millimeter forefoot Gryptonite heel and blow rubber forefoot with key traction elements for improved ride on road and traction on a variety of surfaces