For all S/LAB ULTRA 3 lovers, Salomon kept what makes this shoe a bestseller comfort fit and long-distance ride but updated the upper to reduce the weight by 10%. The new Matryx mesh is breathable and ultra-resistant for a lasting sock-like fit. The midsole still offers great cushioning, while the Contagrip outsole powers through the kilometers. A firm midsole with an ideal mix of protection and cushioning to smash those long runs and races. Wrapping your foot, this shoe offers a generous landing platform to give you the confidence to take off and land, every time. The sock-like upper cradles your foot for a comfy and reassuring ride, from start to finish line. Energy Save: A long-lasting polyurethane (PU) foam that provides superior cushioning and protection for long distance hiking and ultra-running All Terrain Contagrip is built for the widest variety of surfaces. It delivers durability & confidence on wet, dry, hard or loose surfaces  Matryx: This patented technology upper is weave