Comfortable flat-knit upper offers dynamic zonal stretch, containment and breathability where you need it. Reinforced heel construction with added foam for added lockdown and security during heel strike. The perforated tongue provides midfoot support and containment thanks to the addition of foam that eliminates pressure on the top of the foot. The EVA insole adds rebond and elasticity to every stride. The softer, lighter one-piece Flow midsole provides responsive, long-lasting cushioning. Flow technology eliminates the rubber outsole for a lighter, smoother ride on any surface. The outsole pattern is super durable and grippy for a fluid, natural stride. NEUTRAL: For runners who need flexibility, cushioning and versatility.