The Endorphin Shift 2 running shoes are the definition of effortless performance. It mixes a lofty bed of PwrRun cushioning with propulsive SpeedRoll technology, so you get more comfort and speed out of each stride. It has a snugger fit with a trim new heel counter, and anti-slip laces to lock it in. With its stable platform and touch of guidance, you can count on lots of feel-good miles, every day of the week.