Lighter than ever before for your prodigal runner, the fifth version of the GT-1000 has been updated with Rearfoot GEL® technology. This unique GEL® material absorbs impact in their foot to ensure a smoother, more comfortable ride. The Trusstic System® sole has been reengineered to reduce the weight of their stride, while the DuoMax™; Support System continues to provide superior support for mild to moderate overpronators.