Peter Kaiser Women&#39;s Birja Boot,Black,3 M DE / 5.5 B(M) US,Peter Kaiser" /> 100% Leather Synthetic sole Shaft measures approximately 16" from arch Heel measures approximately 3" Boot opening measures approximately 12" around Please Note: When you receive your shoes, the US size ordered will be printed on the box. The size printed on the shoe itself is its equivalent in German sizing, which is 2.5 sizes smaller.