Depending on your sizing Cavallo will select the best suited last or you can choose as required.
(A Last is the wooden structure around which the boot is made).
There is three different styles.
N14 is the classic for the normal foot
E14 is used in all SLIM models and ideal for narrow feet. H
EEL22 is the wider model that can be chosen as needed.
Please see the measurements if you would like to compare and select, otherwise the standard choice is best.