Improve your running game to set your own personal records. The ASICS GEL-Fortitude® 7 features various improvements and enhancements over the predecessors that make this update better than ever! I.G.S.®, Impact Guidance System, enhances the foot's natural gait from the heel strike to toe off. Built-in Maximum Support Last to better accomodate orthotics. Exceptional cushioning for runners that demand a little bit more cushioning, features rearfoot and forefoot GEL® Cushioning Systems. Well-cushioned SpEVA&@174; platform with underfoot comfort and cushioning by the ultra-plush 8.5mm ComforDry Sockliner, provide cushioning and responsiveness. DuraSponge® outsole absorbs shock and impact.