These Nike road running sneakers feature responsive cushioning with dual Air Zoom units and a ReactX foam midsole. Improved engineered mesh on the upper decreases weight and increases breathability. The ReactX foam midsole surrounds forefoot and heel Air Zoom units for an energized ride, and is 13% more responsive than previous React technology. The waffle-inspired rubber outsole provides traction and flexibility. The plush collar, tongue and sockliner provide a secure and comfortable fit. They have lace-up fastening and reflective details. The heel-to-toe drop is 10mm. The product weight is approximately 251g/8.9oz (US 8).