Description:Neutral shoe - UPPER: Super breathable and light 3D sandwich mesh. Injected overlay "fingers" provide support. MIDSOLE: Zoom Air heel and forefoot. Brand new Cushlon ST foam and Dura DS for the ultimate combination of lightweight, responsiveness and durability. OUTSOLE: Dura DS and BRS 1000 for your speed and longevity, mile after mile. PROFILE: Our lightweight rocket in the line. For the serious runner that looks for an advantage in speed. 10.7 oz.