Montrail Women's Badrock Outdry Light Stable Trail Running Shoe 100% Synthetic and mesh Synthetic sole Heel measures approximately 1.5" Variable Fit System-variable width lacing, with a dynamic welded "seamless" support frame-provides a custom fit and additional medial support Full-length compression-molded EVA midsole for cushioning and flexibility Dual-lug design combined with full-length Gryptonite outsole Deflecting lugs for cushioning Digging lugs at perimeter provide traction for up- and downhill runs