I first ordered the New Balance Men's M890 Running Shoe,Blue/Green,11.5 D US, I usually wear an 11 D, and these were uncomfortably narrow. I returned them to get the Reebok Men's Zigtech Big and Fast, and they fit perfectly. Plenty of toe box and the heel cushion was great. They provide a spring in my step that I wanted and kept my heel strike nice and comfortable. Really a great shoe for the money.