The Endorphin Pro 4 running shoe represents a remarkable engineering achievement: it's both snappy and responsive, yet smooth and efficient. This feat was accomplished by combining PWRRUN PB and PWRRUN HG in the midsole - a groundbreaking innovation in the industry. With a full carbon plate providing longitudinal stiffness and optimal metabolic efficiency, every stride is maximized. Plus, the silky-smooth heel liner and integrated tongue system ensure that slipping into this marathon shoe feels like reuniting with an old friend on race day. Carbon plate is engineered for longitudinal stiffness and maximum metabolic efficiency Snappy Speedroll technologyeffortless speed and propusive forward motion Race-ready fit - Silky smooth heel liner and integrated tongue for a connected comfort Technical Features Drop: 8 mm Heel: 39.5 mm Forefoot: 31.5 mm Support: Neutral Weight 185 g (6.5 oz)