Most people don't make a routine out of a physically demanding activity that requires persistent effort to get any good at. Even fewer do that just for fun. It's like we've always said - runners aren't normal. New Balance M860O13 will keep up with the demands placed on shoes by the dedication of the stability-minded every day runner. The latest entry in the series, the Fresh Foam New Balance M860O13 men's running shoe, augments the pinnacle cushioning experience of Fresh Foam X with a supportive medial post to provide essential stability. Heel height: 4cm Upper material: Structured and breathable air mesh upper Width Fitting: B