Product Storythe Foreverrun Nitro For Women Dawns A New Era Of Support And Guidance For All Runners, Providing The Softness Of A Full Nitrofoam Midsole Without Compromising Stability. It Features A Newly Developed Nitrofoam Midsole With Two Different Densities – A Softer Core With A Firmer Rim – And An Asymmetrical Heel Counter To Hold The Foot In Place Through Every Stride. The Theme Also Continues On The Outsole, With A Wider Medial Rubber Segment That Stabilises Late-Stage Pronation. In Short, It's The Perfect Blend Of Support And Cushion.features & Benefitsnitro : Advanced Nitrogen-Injected Foam Designed To Provide Superior Responsiveness And Cushioning In A Lightweight Packagepwrtape: Targeted Upper Reinforcement For Support And Durabilityrunguide: Firm Density Guide Rail Designed To Keep Your Foot Aligned And Centred Through Each Stridepumagrip: Durable Performance Rubber Compound Designed For All-Surface Tractiondetailsengineered Mesh Uppermoulded Heel Technologyflared Rubber Outsolecushioning Level: Mediumbest For: Overpronatorsrunner Type: Frequent