The Experience Form is all about effortless and supportive miles, with a lightweight midsole, guidance technology, and a 4mm drop. Sail through daily workouts, crush long training runs, and smile through miles with the run club crew in a support shoe that's ready to move. Lightweight and responsive compression-molded midsole foam encourages efficiency. It's got GuideRail™ technology, which encourages natural foot placement with gentle guidance for an inherently stable ride. A low 4mm drop complements the shoe's rocker shape geometry for an efficient toe-off and a smooth, quick roll through your stride. With Altra's signature FootShape fit, you get a roomy toe box and a secure midfoot, so you can move the way you were designed to. Feel the glide in your stride with the guidance and performance you need.Features:Forward:- It's a lightweight and supportive responsiveness you've got to feel to believe. With effortless performance and efficiency, glide through a run that's smooth and freeing.Lightweight + effortless performance:- Compression-molded EVA foam is lightweight, responsive midsole foam that encourages efficiency and an effortless feel.Guidance when you need it:- GuideRail™ technology acts like a supportive guide rail that encourages natural foot placement, with gentle guidance designed for overpronators, but only when it's needed.Efficient toe-off and natural propulsion:- A rocker shape is designed to give the feeling of being propelled forward with each step and provides an efficient toe-off without taking away from your natural stride.Roomy toe box for natural movement:- With Altra's signature FootShape™ fit, you get plenty of room to help your toes move freely, with a secure midfoot.Promotes good foot health:- This product received the American Podiatric Medical Association (APMA) Seal of Acceptance, awarded to products found by the Association to promote good foot health.Specifications:- Best For: road running, walking- Upper: Two-color engineered mesh- Midsole: Lightweight compression-molded EVA foam- Outsole: Rubber- Weight: 7.8 oz / 221 g- Cushion: Mid- Support: GuideRail™- FootShape: Standard