Fashion and stylish design. Easy to match. Better relationship of quality and price. Because the foot is three-dimensional, any two-dimensional measuring tool, such as a ruler or Bannok device, can only approximate your true shoe size. Please also keep in mind the manufacturers use different lasts to construct their shoes, and sizing may vary accordingly. Additional Details ------------------------------ Product description: Fashion and stylish design. Easy to match. Better relationship of quality and price. Because the foot is three-dimensional, any two-dimensional measuring tool, such as a ruler or Bannok device, can only approximate your true shoe size. Please also keep in mind the manufacturers use different lasts to construct their shoes, and sizing may vary accordingly.