Design: Highly tuned single layer mesh creates an inviting fit and feel Neutral support gives you balance and is good for long and short runs Redesigned midfoot strap offers a more molded fit to the foot, shaped for all sized arches Heel area optimizes the landing space and improves transition and durability An extra flex groove offers a smooth toe-off In-Shoe Comfort: Nike® React technology with 2 Zoom Air units gives you a bouncy, springy sensation and an energized feel at toe-off Nike® React technology is a lightweight durable foam that delivers a comfortable, responsive ride Durability & Traction: Waffle-inspired pattern provides traction for the road Additional Details: Weight: 10.2 oz (288g) Heel-to-toe drop: 10mm