Rubber sole High-abrasion rubber at the outsole with lugs gives you durable traction. The tongue is even more plush than previous versions. Added extra support along the sides via a band at the midfoot. It works with your laces, helping you adjust how snug and secure your foot feels. There's also a clip at the heel, helping with stability as you run on uneven surfaces. Nike ZoomX foam in the heel provides energy return, giving you a responsive feel as you move forward. Thanks to runner's feedback, you get an improved, accommodating fit with an arch band working with the laces to hug and added stretch and ventilation through the toe box A trusted favourite for your daily training returns. This version adds responsive ZoomX foam cushioning, bringing an energetic pop to your stride that's perfect for high mileage on the road. It's super lightweight, with plenty of stretch and ventilation through the upper. Looking for the right amount of support?