For neutral & underpronating runners who require comfort, cushioning & functionality.. Rear & forefoot Hydroflow pr ovides excellent cushioning an d shock absorption. Breathable mesh upper with syn thetic overlays. Textile linin g with removable EVA insole. BIOMOGO midsole reduces the sh ock felt when landing & taki ng off. Dual density post is biomechan ically engineered to allow for progressive pronation control