DRILLES run true to European sizing. Please use the below chart to estimate your European shoe size.

As with any leather shoe, and as DRILLES are hand-stitched, there will be some degree of give over time. If you feel you are in between sizes, we would normally suggest going up a size. Width-wise, we find DRILLES are a standard fit - if you have a particularly narrow foot and you fall between sizes it may be you would benefit from going down a size.  If you are unsure of your usual European shoe size we suggest looking at other shoes or shoe boxes you have where it may be listed. 
Our men's DRILLES are made using a different last to our women's shoes, and also a wider sole. This means a men's 41 will be a slightly different shape and a little broader than the women's in the same size. Please feel free to contact us with any questions you have about sizing and fit: info@drilles.com