Designed to give you exactly and only what you need, the Saucony Kinvara 2
features a lower heel-to-toe ratio that's built to server your natural stride. The sole is an ultra-light, durable foam and the grooves cut into the sole (or "siping") are flat instead of curved. This provides just a shade more stability, which can really matter during the end stages of a run. The upper is a mono-flament mesh that, though incredibly light and breathable, always keeps out the dirt and stones. It's all completed with a foam heel collar for a snug performance fit.