Columbia Montrail Women's Mountain Masochist III Running Shoe 100% Mesh Construction With Webbing Overlays Imported Rubber sole Mesh construction with webbing overlays for enhanced fit and support Fluid Foam midsole for exceptional cushioning, flexibility and support Patented Fluid Guide technology for enhanced mid-foot stability and a smooth ride on the trail Ride heights: 16mm heel/8mm forefoot Full length Gryptonite outsole combined with full length Trail Shield for ultimate underfoot traction and protection