If you cannot provide the following dimensions, you can also refer to our size table;It depends on the foot type.If you have a wide foot type, it is recommended to choose a size one yard larger. Please select the appropriate size for yourself! Boots Height: the distance from tops of bootsto the soles of the boots (the heel isn’t included, the highest point of the boots)Tops of boots Perimeter: the length of circumference a circle of the tops of bootsShankPerimeter: the length of circumference a circle of the thickest position of the shankShank height: the length of from the thickest position of the shank to the soles of bootsThe measurement method of feet and shank is as follows: Step 1: Foot length –distance between big toe to heel;Step 2: Foot width - the distance between the left and right sides of the foot;Step 3: Foot perimeter- the perimeter of the widest position of foot;Step 4: Abdominal perimeter - the distance ofcircumference a circlefrom the feet soles to the highest of the instep;Step 5: Pocket perimeter - the distance ofcircumference a circlefrom the feet heels to the highest of the instep.Note: 1.There are only has boots height and tops of boots perimeter,if boots height does not exceedshank height. 14.If you can provide the above dimensions, please email us the four sizes of A, B, C, D!