Just look at the Revel 2. It leaves you more breathless than the run itself. And beneath its street style is comfort and performance that enables you to run today without feeling it tomorrow. The updated flat-knit upper gives this shoe a new look and feel that works well beyond your run. A Heel Segmented Crash Pad promotes smooth transitions. Heat-activated yarns ensure the flat knit keeps its shape, preventing stretching over time. BioMoGo DNA cushioning dynamically adapts to your stride, dispersing impact away from your body for just- right softness underfoot.