Feel fast from the start in your new Nike Zoom Matumbo 3. Blast off with natural propulsion as your toes spread and push off in a fit that contours to your foot. Let Dynamic Flywires hug your foot with perfect fit and feel. Ride lightnin' quick strides thanks to instant response and your just-right amount of cushion. Your Zoom Matumbo 3 is perfect for 5000 to 10,000 meter races with a 4 pin horseshoe plate for winning traction.Unisex sizing is in men's D width. Women size down 2 sizes. Ex.: If you are a women's size 7 in your running shoe, you will choose unisex size 5