The Brooks Ghost Max 4 is a highly cushioned, low-drop daily training shoe designed for running, walking, and recovery days it features a major weight reduction and a more neutral, flexible geometry compared to its predecessor. Core Features & Updates Lighter and More Nimble: Reviewers from Believe in the Run highlight that the updated geometry cuts substantial weight, making the transition feel more effortless and nimble than the Ghost Max 3. GlideRoll Rocker: The aggressive curved geometry assists with smooth heel-to-toe transitions, which actively lessens the impact on tired legs or feet. Accommodating Fit: Built on a linear last, it offers high internal volume, making it an excellent platform for wider feet or custom orthotics. Thinned-Out Outsole: By reducing the amount of heavy rubber coverage on the bottom, the shoe moves more naturally and handles like a true neutral shoe while maintaining a wide, inherently stable footprint.