Introducing the lightest GT-2000™ ever in the over 20 year history of the series! Much of the weight savings can be attributed to the new Heel Clutching System™ and new FluidRide® midsole. An updated Guidance Line® and Guidance Trusstic System® complement the comfortably supportive Dynamic DuoMax® to provide mild to moderate overpronators the ultimate ride. Weight: 8.4 oz. Heel Height: 21mm. Forefoot Height: 11mm.