Outdoor-ready as always, Nike's ACG Mountain Fly has received a low-top remodelling with lightweight uppers and hardwearing grippy soles. Tested in the tough outdoors, they have flexible synthetic uppers which boast a high-tech lacing system to provide a perfect fit for your outdoor escapades. For luxurious comfort throughout the day, they have Nike's innovative React foam in the midsole and Vaporfly technology. For trusty grip on uneven surfaces, they have a sticky rubber outsole completed with a Waffle-like pattern for a durable finish.