Nike Air Zoom Terra Kiger 8 。The Nike Kiger 8 keeps it light and tight. It\'s a no-frills shoe built with only what you need, for a secure fit and feel. We made it to help keep your foot in place, so you stay agile and upright over uneven terrain. Plus, it\'s got the soft cushioning and responsive feel that gives you a little extra spring with every step. So strap in and get ready to run through the mud and with the trail. Less Dirt, Better Cool A lightweight, breathable mesh at the upper feels cool and secure. It\'s fully lined to keep debris out. Lock-In and Go The heel is designed to lock in place, keeping your foot secure and moving with the shoe. It results in more agility over rocky terrain. Gripped Tread Multidirectional traction lugs in the heel are made from high-abrasion rubber. They help provide enhanced grip on descents and ascents. Smooth and Springy Nike React technology is a lightweight and durable foam that delivers a responsive ride. A Zoom Air unit in the forefoot provides extra responsiveness, returning your energy to help guide you down the trail. Rock plate helps shield your foot on rough terrain.