PRODUCT DESCRIPTION: Max cushioning. Full speed. The Endorphin Shift 2 is the definition of effortless performance. It mixes a lofty bed of PWRRUN cushioning with propulsive SPEEDROLL Technology, so you get more out of each stride. And with its perfect touch of stability, you can count on lots of feel-good miles, every day of the week FEATURES: 100% Leather Imported Rubber sole Shaft measures approximately Ankle from arch SPEEDROLL Technology propels you forward effortlessly, so you can run faster, not harder. A lofty bed of PWRRUN gives you a plusher take on SPEEDROLL, making this the perfect shoe for every distance and any day of the week. A trim new heel counter reduces weight while new slip laces provide a perfectly fit as you run. This style is vegan and contains recycled upper materials.