Men's or Women's Endorphin Shift 3 Running Shoes Expired

The Endorphin line was created to compete against the Nike VaporFly or AlphaFly series of shoes which were (and still are) winning all the premier running races. These used really big stack heights, exaggerated heel and toe off and advanced foam (with usually an energy return plate - this specific model doesn't have) to hopefully create the extra few % benefit for runners to benefit from. Though this is the 'trainer' in the Endorphin line without most of the tech and is more about the fitment matching with it being the lowest end foam and no plate.