Brooks Best-Selling Trail shoe was designed by and for Ultramarathoner Scott Jurek Asymmetric upper anatomically wraps the foot with conforming materials Four-point pivot posts act like a suspension system for your feet Designed from the ground up to epitomize what a trail shoe should be: rugged without sacrificing runnability Brooks DNA Cushioning Technology - automatically and physically adapts with each foot strike to provide the optimal balance of cushioning and stability personalized for each runner and each step