 This is the Rocklight 315 GTX with Graphene Grip, the world's toughest grip for running and fast-hike adventures over all terrain in any weather. Graphene Grip delivers insane sticky grip and increased durability, all in one rubber, no compromise. The midsole features an 8mm drop from heel to toe and uses our power flow material which gives 10% better shock absorption and 15% better energy return. Inside the midsole, there's a lightweight flexible rock plate that provides underfoot protection while running or fast-hiking. Inside the upper, the Gore-Tex invisible fit technology holds less water and dries 50% faster than other waterproof membranes, guaranteed to keep your feet dry. This is the Rocklight 315 GTX with Graphene Grip, the world's toughest grip for running and fast-hike adventures over all terrain in any weather.