Launch yourself forward with the bouncier full length flytefoam midsole and get an extra boost from the propulsion trusstic suitable for all fast runners the gel ds trainer 22 is an excellent running shoe for neutral pronation road runners make the hardest roads seem soft with rear foot gel cushioning in the back and keep your footing in the rain with a wet grip rubber fore foot the gel ds trainer 22 is the fastest shoe in the flytefoam trio