The GT-2000™ 4 is the core runner’s bread and butter with its balance of cushioning and stability, outfitted by the comfortably supportive Dynamic DuoMax® and Guidance Trusstic System® that also enhance gait efficiency. Our Rearfoot and Forefoot GEL® Cushioning systems are now even more adaptive, assisting mild to moderate overpronators alike with greater support, while the FluidRide® midsole offers the ultimate ride. Weight: 8.4 oz. Heel Height: 21mm. Forefoot Height: 11mm.