Asics - Gel-DS Trainer IX (Lightning/Lightning/Black) - Men's: A stable running shoe designed for mild to moderate over-pronators. The Gel-DS Trainer IX is a pinnacle, lightweight-training and racing shoe that extends the shock attenuation and stability principles of I.G.S. to enhance forefoot function. I.G.S. (Impact Guidance System) combines all ASICS components to enhance the foots natural gait from heel-to-toe. Extended Trusstic System - allow greater forefoot flexion yielding a more efficient propulsion phase. Gel Cushioning System rearfoot and forefoot shock attenuation at initial impact and propulsion phase. Biomorphic upper fit provides superior fit and function. Shoe weighs 10.1 oz.