When choosing a suitable size for your cotton shoes, you need to consider the following points:
1、 Measure foot size
1. Length measurement: It is best to measure the length of the feet in the afternoon or evening, as after a day of activity, the feet may slightly swell, and the measured size at this time is more in line with actual wearing needs. You can use a ruler or professional foot length measuring tool to place your foot flat on paper, use a pen to draw a contour along the longest part of the foot (usually from the heel to the front end of the longest toe), and then measure the length of the contour with a ruler. This is the length dimension of your feet.
-For example, in the afternoon, Xiaoming measured his foot length to be 240 millimeters, which can serve as an important reference for him to choose the size of cotton shoes. If measured in the morning, a relatively small size may be obtained due to insufficient swelling of the feet, which may make the selected cotton shoes feel tight when worn in the afternoon or evening.
2. Width measurement: When the foot is swollen, measure the widest part of the foot, usually the toe ball area. The method is to place the foot on paper, mark the widest sides of the foot, and then measure the distance between the two points to obtain the width dimension of the foot.
-Practical application: For example, Xiaohong's foot width is 90 millimeters. When choosing cotton shoes, this width needs to be considered to ensure that the shoe width can accommodate her feet without causing compression. If the width of the cotton shoes chosen is too narrow, not only will it be uncomfortable to wear, but it may also affect the blood circulation of the feet.

2、 Reference shoe size standard
1. The size standards for cotton shoes of different brands may vary. Generally speaking, there are various standards such as European, American, and Chinese codes. When purchasing cotton shoes, it is important to check the size chart provided by the brand and compare your measured foot length and width measurements with the data in the chart.
-Detailed comparison: For example, if your foot length is 235 millimeters, the corresponding size in Chinese sizes may be 37, but in some brands of shoes, it may vary due to factors such as fit. Some brands may lean towards half a size, while others may lean towards half a size smaller. So you can't just rely on the size you usually wear to choose cotton shoes, you must refer to the specific brand's size chart.
Understanding the differences in size standards across different regions is also important. European codes are usually larger than Chinese codes, while American codes have different calculation methods. For example, with a foot length of 245 millimeters, it may be size 39 in China and around size 38 in Europe.
-Attention: When shopping for cotton shoes online, it is important to carefully check the size instructions to avoid choosing the wrong size due to a lack of understanding of the size standards. If you have any questions, you can consult customer service and provide your foot length and width measurements, so that they can help recommend the appropriate size.

3、 Consider cotton shoe styles and interior space
1. Style influence: Different styles of cotton shoes have different size requirements. For example, high top cotton shoes may need to consider ankle comfort and leave some space appropriately to avoid feeling tight when worn; Low cut cotton shoes, on the other hand, place more emphasis on the fit between the front end of the foot and the heel.
-Example of high top cotton shoes: Xiao Zhang purchased a pair of high top cotton shoes. He usually wears size 40 shoes, but considering that high top cotton shoes require some ankle movement space, he chose size 41. After putting it on, the ankle feels very comfortable, there is no sense of restraint, and the feet do not feel too loose.
-Example of low top cotton shoes: Xiao Li chose a pair of low top cotton shoes, and based on his foot length and width measurements, he chose size 38, which was the same as his usual size. Due to the emphasis on fit, low cut cotton shoes are suitable for both the front end and heel of the foot, making walking stable.
2. Internal space: Due to the padding inside the cotton shoes, it will occupy a certain amount of space. Some cotton shoes have thicker padding, which may make the internal space relatively smaller. So when choosing a size, this should be taken into consideration. If the filling is thick, you may need to choose shoes that are one size larger than usual to ensure that your feet have enough space for movement, especially the toes can stretch freely without being squeezed.
-Filler effect: Xiao Wang purchased a pair of cotton shoes filled with a large amount of wool, and when he tried them on, he found that he, who was originally wearing size 39, felt a bit cramped when wearing these shoes in size 39. So he changed to size 40 and felt very comfortable wearing it, with enough space for his toes to move around.

4、 Try on experience
1. Trying on is the most important step in choosing the appropriate size of cotton shoes. When trying on, pay attention to the following points:
-Walking experience: Take a few steps in cotton shoes and feel if the shoes follow your feet. Shoes should not be too loose, otherwise they are prone to falling off while walking; It should not be too tight, otherwise it will rub your feet and affect the comfort of wearing. Especially in the heel and toe areas, there should be no obvious friction sensation.
-Actual experience: While trying on cotton shoes, Xiao Zhao found that the shoes were a bit loose after walking for a while, and the heel area was prone to sliding. He realized that the size of these shoes might be too large, so he tried on a smaller size and found it more suitable, making his walking more stable.
-Comfort check: Check the comfort of various parts of the feet. The toes should be able to naturally stretch inside the shoes without any sense of pressure; The instep should not feel pressed too tightly; The heel should fit snugly against the heel of the shoe without sliding up or down. At the same time, pay attention to whether the filling inside the shoes is uniform and whether there is any discomfort caused by local thickness or thinness.
-Comprehensive inspection: When Xiaoqian tried on cotton shoes, he not only felt the overall comfort of the shoes, but also intentionally moved his toes, bent his instep, and felt the pressure on various parts. He found that the instep of one pair of shoes was a bit tight, while the other pair was very suitable, so he ultimately chose the appropriate pair.