An excellent choice for everyday running and training, the Asics GT-1000 7 features new technology that makes this edition better than ever. A new last with FlyteFoam® technology provides lightweight, long-lasting underfoot cushioning. The Impact Guidance System or I.G.S® promotes a more natural ride during the run. Upper: Improved mesh upper provides breathable flexibility. Padded tongue and heel collar enhance comfort. Lace-up front offers an adjustable fit. Synthetic overlays offer lightweight support. Midsole: Impact Guidance System (I.G.S®) employs linked componentry to enhance the foots natural gait form heel strike to toe-off. FlyteFoam® Midsole technology is lightweight and provides long lasting, responsive cushioning. Outsole: AHAR® (ASICS High Abrasion Rubber)Plus is placed in critical areas of the outsole for exceptional durability.