35 (22.7cm), 35.5 (23cm), 36 (23.3cm), 36.5 (23.7cm), 37 (24cm), 37.5 (24.3cm), 38 (24.7cm), 38.5 (25cm), 39 (25.3cm), 39.5 (25.7cm), 40 (26cm)
To measure your foot properly you need to stand barefoot on a sheet of paper paper and draw the foot contour with the pen perpendicular to the floor. Then draw 2 parallel lines that define in a rectangle the maximum measures in the length and width of the foot. Check that you are measuring in centimeters. If you have different feet take the measure of both. Let us know also if there is anything that we have to consider like bunion or a wider shoe, etc.