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The highest rated Inov-8 G-Grip tech running shoe models (page 2)

Inov-8's Graphene-Grip, or G-Grip, is an outsole made of graphene-enhanced rubber. At just one atom thick, graphene is made up of a honeycomb structure of carbon and is both the lightest and strongest material known to man (between 100 and 300 times stronger than steel). In combination with rubber, it provides a strong, ultra-durable base that doesn't compromise on flexibility.