If you know your Brannock device size (the measuring tool you see in shoe stores), please order according to that size. If you don't know this size but have formal shoes from other high - end brands, you can refer to the size of those shoes. For reference, you can check our detailed size guide to get in - depth information about our different shoe lasts and styles. The size chart on each product page provides common size conversions, and each product description contains useful tips on whether you need to size up or down for a specific style. If you need a personalized recommendation, please contact customer service.