Altra AFW1759F Women's Olympus 2.5 Trail Running Shoe Fabric or Textile Imported Rubber sole Shaft measures approximately low-top from arch Shaft measures approximately low-top from arch DESIGNED TO IMPROVE: Natural Foot Positioning, Walking Form, Toe Splay, Comfort PLATFORM: Fully cushioned Zero Drop platform with FootShape toe box. CUSHIONING: High. STACK HEIGHT: 36mm. LAST:SD5-W MIDSOLE: Dual layer EVA with A-Bound. OUTSOLE: Durable Rubber with Vibram MegaGrip. INSOLE: 5mm Contour Footbed. UPPER: Abrasion-resistant Mesh with Minimal Seams. OTHER FEATURES: Sandwiched StoneGuard Rock Protection next to the foot, Natural Ride System, 4-Point GaiterTraip Technology IDEAL USES: Trail Running, Hiking, Fastpacking, Trail Racing. WEIGHT: 9.6oz./272g.