Since the linear parameters of shoes of the same size may differ in length among different manufacturers, we recommend using the table below to determine the required sock size based on the length of the foot. You can also use the length of the insole if you are unable to measure your feet, but this option is less accurate!
How to measure foot length correctly?
1) place a piece of paper on the floor;
2) place your bare foot on the paper ( preferably with the heel resting against a wall without a skirting board);
3) trace your foot with a pencil/pen at right angle to the floor (Fig. 1);
4) do the same with the other foot;
5) measure both feet in millimetres in a straight line from the centre of the heel to the end of the longest toe (Fig. 2);
6) use the measurements of the longer foot to select the size.
Please remember not to measure your foot length in the morning when your foot is at rest, as the measurement will be inaccurate. It is better to do the measurement in the afternoon or evening.

Select the size indicated in the table below according to the result.

If the result obtained from the table falls between two sizes, it is recommended to choose the smaller option if the foot has a standard arch and the foot width is average.
Note: when choosing socks from the ExtraCotton Collection for sizes 40 and 44 (if the foot has a standard arch and the foot width is average), we recommend choosing size S 36-39 and M 40-43, respectively, as the lower part of the socks stretches well in length.