Lune London | Ricardo Men's Loafer – Classic Slip-On Shoe for Everyday and OfficeRicardo Loafer Classic Men's Shoe Size Selection & Notes Important: Please select your shoe size based on the measured foot length (cm). EU sizes may vary depending on the model. Measuring Instructions: Place the back of your foot against a wall, mark the longest toe, and measure the distance in centimeters. For a foot length between two values choose the larger size. For wider feet or a high arch rather choose a size up. New shoes may adjust slightly