Pearl iZUMi Women&#39;s SyncroFuel Running Shoe,White/Silver,9 D US,Pearl iZUMi,03/24/1914" /> 100% Synthetic and mesh Rubber sole Half-length medial side syncro Stability Frame Forefoot Flex Grooves for a smooth, efficient ride 360 degree reflectivity Heel to toe offset 12mm SKYDEX Heel crash pad