Its LightCELL superfoam midsole is PEBA-based and nitrogen-infused for a lightweight bounce. Further, the top-loaded ZeroSag midsole inserts assure incredible shock absorption, with practically no breakdown on long runs. Shaped with GOFLOW geometry, the midsole guides your stride with neutral support for a natural, seamless flow from heel to toe.
A shoe designed for road ultra's, but my goal in buying the shoe was to find a shoe that could do long runs, while being supportive, nimble and breaks out of the max stack trend (I still love big stack too)
