Maximum cushioning provides elevated comfort for everyday runs. Experience a soft, rocker-shaped platform made with new ReactX foam underfoot, and an ultra-comfortable collar and tongue for a snug feel. Plus, a water-resistant membrane was added to this version to help keep you dry. Responsiveness: moderate:The more responsive the shoe, the more energy return you can get back with each step. Whether you want to run a little bit faster or with a little less effort, responsive shoes help give you slightly more spring in your step to get more out of your run. ReactX foam gives you +13% energy return compared with React foam, helping you stay fresh and bouncy during your run. Contained breathability:A water-repellent liner in the toe helps keep you dry when the weather turns. Key features:The updated Flyknit upper and a water-resistant membrane help keep you dryNew ReactX foam in the midsole for extra cushioningA Waffle outsole for durable traction on the roadsAn ultra-comfortable collar and tongue for a soft, snug fitWhat's new? New ReactX cushioning for even more comfort, and a revamped upper and wider toe box. Product details:Weight: Approx. 281g (women's size 6)Heel-to-toe drop: 9mmNot intended for use as personal protective equipment (PPE),More benefits:Waffle outsole provides durable traction. Flyknit tongue is adjustable and plush. Foam collar is soft and supportive to the touch. Increased rubber at the outsole gives traction and durability. Product details:Weight: 281g (women's size 5.5)Heel-to-toe drop: 9mm Nike InfinityRN 4 Women's Road Running Shoes - Grey.