Smooth, responsive and serene, the Mizuno Neo Zen delivers a ride that’s as calming as it is energizing. The Neo Zen introduces Enerzy NXT Nitrogen-Infused foam, giving your runs a distinctive bounce that keeps you energized and light on your feet. Paired with Smooth Speed Assist technology, this shoe gives you a buttery-smooth transition for every stride, so you can focus on finding your Zen. Details: Upper: A stretchy one-piece knit upper and seamless integrated tongue delivers a sleek look and sock-like fit, giving you breathability and comfort for long runs. Midsole: Mizuno’s Enerzy NXT Nitrogen-Infused TPU foam provides soft, lightweight cushioning with unique and peppy energy return. Plus, Smooth Speed Assist technology gives you buttery-smooth transitions to keep you rolling forward effortlessly.Outsole: Durable construction designed for smooth transitions and stability on the road.