Features of the Altra Women's Lone Peak 3.5 Mid Mesh Shoe Ideal Uses: Trail Running, Hiking, Fastpacking, Warm Weather Conditions Stack Height: 25 mm Designed to Improve: Natural Foot Positioning, Walking Form, Toe Splay, Comfort Platform: Fully Cushioned Zero Drop platform and FootShape toe box Sandwiched StoneGuard Rock Protection next to the foot; Natural Ride System, 4-Point GaiterTrap System, DuraTread