The foams are protected by an X10 rubber outsole

- Rubber in toe and heel for durability

Rubber outsole

Midsole: Super-critical EVA foam provides a soft and responsive ride

locked in place

Altra Experience Flow ST Women's Shoe size:7.5 The foams are protected byExperience a new reality in a shoe with gentle guidance, made to lead you on a euphoric and effortless road run. Featuring GuideRail technology, with medial guidance for an inherently stable ride, and a new lightweight and efficient Altra EGO P35 midsole foam. Hit the road for daily miles or training runs with the comfort and stability your feet are craving. Its got the Altra Fit, with room for your toes and a secure midfoot for natural movement. A