No energy leaks here: The Brooks Levitate StealthFit 6 Running Shoe makes sure that every ounce of energy we put in is utilized. The revamped platform is cushier and springier than those that came before it, giving us a 2mm boost in high-reactive foam for quicker, more powerful transitions. Plus, the fine-tuned knit upper is slightly wider to allow for natural foot flexion and toe splay while still stretching and compressing into a molded, made-for-us fit.