Pearl Izumi designed the Women's EM Road M 3 Running Shoe for long distance road runners in need of mid foot pronation stabilization, but Pearl Izumi went about the design in a new and different way. What sets this shoe apart from the other stability shoes is the groundbreaking E:Motion midsole platform, which provides the smoothest running you've ever experienced. Its 'Dynamic Offset' technology changes the effective heel to toe drop as you roll from heel to toe, so you're driven forward with an intuitive flow and a natural, no slap, smooth as silk feel. Imagine how this efficiency adds up over a ten mile run. Now factor in a high density medial post that corrects and cushions each foot strike and provides just the right amount of lateral release and medial stability, springy Energy Foam underfoot for cushioning and lively rebound, and a glove like fit on the upper. Oh, and a ridiculously low weight for a long distance stability shoe. Yes, it is different.