The same lightweight speed you know and love with a newly redesigned upper for maximum breathability. Breathable mesh upper with FlexFilm overlays for secure lockdown and comfort. Plush RUNDRY collar lining wicks away sweat to keep you feeling dry, fresh, and comfortable. High-abrasion EVA+ midsole for durable cushioning and PowerGrid heel insert with Grid technology to center your foot, absorb shock, and distribute pressure for the most natural stride possible. XT-900 carbon rubber in high-wear areas of the outsole for traction and long-lasting durability. Wt. 7.7 oz.