The Size Guide is based on the feet with the average length and circumference. So the exact shoes size would be slightly different with ith shape of shoes such as open-toe, covered toe box and so on. So if there is the actual measurment of feet, it might help to find the right size.
The following is shoes size chart we're using. And you can find how to measure your feet below.
Balboa Zin Shoes Size
** Basically Balboa Zin Shoes make as normal wide but depends on the customer's ball girth could be midified without additional charge.
A. Measuring feet length
Stand up straight so that the weight of your body is distributed on your feet. Keep the pencil as vertically as possible, then trace down your foot shape.
Measure foot length by millimeter.
B. Measuring feet width(circumference)
As in the image below, use a tape measure to measure the circumference of your foot by strating at the joint where your big toe begins, wrapping the tape measure around your foot once, and ending at the joint where your little toe begins.
** Most of people are not same size for both feet. One is bigger than another. So we recommand both foot measurement. Sometime it's a little bit bothering you but it's definitely worth.
** Feet circumference is almost same with feet length. 1:1. If you feet is not, you're narrow circumference. Otherwise it's wide.