Women's New Balance 680 V8 Ld10 - Blue - Low-top sneakers Rebel by name, rebel by nature, the fuel cell rebel v4 will change the way you look at an everyday trainer. The propulsive feel of fuel cell technology creates a remarkably responsive underfoot that can quickly adapt from long, steady runs to something shorter and more spontaneous. Additional details like a streamlined mesh upper add race-inspired accents to a dynamic upbeat trainer, designed to bring an element of fun back into your run.