Maximize your workout potential with the updated Altra The One2™ (pronounced one-squared, not one-two) trail running shoe. From a casual run, marathon day or speedwork, this women's running shoe delivers a comfortable, cushioned performance with a quick-dry mesh upper and an asymmetrical lace closure that offers pressure-point relief. The foot-shaped, Zero Drop™ platform supports a natural stride and rugged stability. The InnerFlex EVA midsole consists of deep flex grooves from heel to forefoot for a smooth and flexible ride that allows your foot to function naturally through the gait cycle. Dual-layer A-Bound™ cushioning supports you over varied terrain, while a generous stack height of the shoe will increase slightly, giving you a little more protection from the road below for higher mileage efforts. The Altra The One2™ trainer is finished with a lightweight rubber FootPod™ outsole that maps the bones of the foot for a natural flex and features heel and forefoot trail holes for excellent uphill and downhill traction.23mm stack height5mm contoured insoleA-Bound™ TechnologyAsymmetric LacingFootPod™ OutsoleFoot-Shaped DesignInnerFlex EVALightweight rubber outsoleNRS - Natural Ride System™Quick-dry closed mesh upperWeight: 5.4 oz.Zero Drop™ FootwearStyle Number: A2423-2View All Altra ProductsCustomer Reviews for Women's Altra The One2™