The endorphin pro 4 running shoe is a miraculous feat of engineering: snappy and responsive yet smooth and efficient. Something we achieved by fusing pwrrun pb and pwrrun hg together in the midsolean industry first. A full carbon plate adds longitudinal stiffness and maximum metabolic efficiency. And the silky-smooth heel liner and integrated tongue system makes this marathon shoe feel like slipping on an old friend come race day. * Carbon plate is engineered for longitudinal stiffness and maximum metabolic efficiency. * Snappy speedroll technology - effortless speed and propusive forward motion. * Race-ready fit - silky smooth heel liner and integrated tongue for a connected comfort. * Speed Training. * Support: Neutral. Cushioning: * Pwrrun HG. * Pwrrun PB. Weight per shoe: * Men: 7.5oz (212g). * Women: 6.5oz (185g). * Offset: 8mm (39.5mm/31.5mm). * Race day/high performance. * Snappy and responsive. * Speedroll technology.