Vibram is launching a new grip technology for use on ice, especially wet ice, called Vibram Arctic Grip. The sole features special thermochromic lugs that are activated when the temperature falls below 0 degrees Celsius. In contrast with existing ice grip systems, which use metal support devices inserted into the sole, Vibram Arctic Grip doesn't scratch or damage indoor surfaces and doesn't absorb liquids or dirt. Initially, Wolverine Worldwide will use the system exclusively in the autumn/winter 2016/17 collections of its Merrell, Saucony, Sperry, Cat, Wolverine and Hush Puppies brands.