Huili Men's Short Rain Boots, Waterproof Non-Slip Rubber Shoes, Thickened Wear-Resistant Water Shoes, Black, Size 40

1. All measurements are in millimeters.

2. Place foot on a white paper, mark the front and back points with a pen, the distance between the two points is the correct foot length.

3. Left and right feet may have slight differences, use the measurement of the larger foot.

4. The measured size should be approximately the same as the usual size worn. Significant deviations indicate incorrect measurement method.