This mainstay of the ASICS® performance running line has been re-tooled to provide the remarkably supportive and responsive ride of classic GEL-DS Trainer® running shoes. With an updated midsole set up and new upper geometry, this shoe will satisfy those that needs a bit more support but love the fast feel of a lightweight trainer. Asymmetrical upper enhances fit and comfort while minimizing the potential for irritation. Biomorphic Fit™provides a superior fit and function. Impact Guidance System (I.G.S.®) features linked componentry that enhances the foot's natural gait from heel strike to toe off. Solyte™ midsole is lighter than ASICS'® standard EVA and SpEVA™ combined with improved cushioning and durability. Space Trusstic System® creates a pocket between the Trusstic System® device and the midsole, allowing for greater midsole deformation and more efficient foot function. Wt. 10.2 oz.