The GT-4000 2 running shoes are one of the most stable ASICS offerings and are recommended for excessive overpronators. This update retains GUIDANCE TRUSSTIC technology and DUOMAX technology, but these support pieces have been bolstered together to improve the shoe's already impressive stability. Along with increased support, a reinforced arch wraps the foot over the sole even better to increase stability and comfort. It's also softer in the heel thanks to the sockliner that sits atop a layer of OrthoLite foam for improved step-in comfort. If you need a shoe packed with stability, but don't want to give up fit and comfort, the GT-4000 2 running shoe is a recommended stability trainer.