New in a box authentic LIGHTWEIGHT AND BUILT FOR SPEED. Designed to make fast go faster, the Nike Zoom Gravity is built to take you from quick tempo runs to winning races. Snappy forefoot propulsion and grippy, multi-surface traction combine to maximize your stride. Responsive Zoom Air unit in the forefoot gives you that propulsive, snappy feeling. The lifted height along the midsole makes room for more cushioning inside. Dual-density foam with a soft core in a firm carrier. . Springy outsole