Responsive speed aggressive traction durable protection — the Nike Air Zoom Terra Kiger 4 has everything you need to tackle the trails this season. Breathable mesh upper with Flywire cables that wrap the midfoot and incorporate with the laces for adjustable support and lockdown over the footbed. High-abrasion nano-skin coating over the toe box that protects the foot from trail debris. Fit band across the first two lace eyelets holds the foot in place eliminating wiggle room to prevent injury. Phylon midsole for lightweight cushioning with every step. Zoom Air units in the forefoot and heel for low-profile responsive cushioning that returns energy and encourages a faster running stride. Outsole features a high-abrasion rubber perimeter and Waffle lugs for durable traction on uneven terrain. Wt. 10.0 oz.