Saucony - Grid Jazz 9 (White/Navy/Yellow) - Women's: This legendary shoe meets the expectations of the die-hard technical running Jazz fanatics who accept nothing less than the unsurpassed comfort of Saucony's Standard last, with its wide forefoot and narrow heel. The sole of the Jazz 9 has long-lasting durability and a smooth ride due to a split outsole that is a combination of XT-600 Carbon Rubber and Blown Rubber, with XT-900 in the heel strike zone. Integrated from past Jazz models are the Visible Grid System, Forefoot HRC, and a Midfoot Support Bridge. Additionally, no Jazz update would be complete without Saucony's renowned triangular lugs to enhance cushioning and traction. Designed for under-pronators to neutral runners. Compression molded EVA midsole. 3M Reflective for night running safety. Flex Grooves allow the shoe to bend and flex properly with the natural motion of the foot. Shoe weighs 9.4 oz.