The width of the shoes is normal. Maybe the shoes are not suitable for feet that are too thin or too fat. If the width of the foot is too wide or too fat. You can choose to increase 1 shoe size.

2. The average error on the size chart is approximately 0.1cm - 0.3cm.
3. Measure your foot length as follows: Measure the length of the foot, place it on a piece of white paper, apply force to the foot, mark the length of the toe and heel of the foot, and measure the length of the mark with a ruler. Or the foot is measured on the ruler. Do not hold the foot to measure the size, usually this is not accurate.