Design: Updated Flyknit upper and a water-resistant membrane help keep you dry Ultra-comfortable collar and tongue for a soft, snug fit Reflective paint on midsole Reflective Swoosh logo, overlays and laces In-Shoe Comfort: New ReactX foam in the midsole for extra cushioning Durability & Traction: Waffle outsole for durable traction on the roads Additional Details: Weight: Approx. 281 g/9.9 oz (Women’s US 8) Heel-to-toe drop: 9 mm