La Sportiva Mountain Running Shoe Low Cut in revolutionary product for the ultra trail world of La Sportiva. The new XFLow foam has been developed for maximum cushioning and energy return - kilometre after kilometre. Every detail has been thought through to fulfil the needs of the most demanding ultra runners: The large toe cap and breathable upper ensure comfort even after several hours of running, the Wrapping System construction and perfect heel ergonomics ensure stability and protection, while the rocker geometry supports a fluid and progressive stride on any terrain. XFlow midsole, supercritical foam with super cushioning effect and springy energy return. Rolling and stability are facilitated by the Progressive Rocker and the wide footbed Wrapping System construction, which wraps and secures the foot well so that it cannot slip into the shoe Breathable mesh upper for quick drying and to protect the foot from overheating.