[Size Guide]
Finger size can change by 0.5 to 1 size in the summer, when swelling and sweating cause fingers to thicken, and in the winter, when the cold weather makes fingers thinner. When purchasing rings, it is recommended to take seasonal differences into consideration and choose a size that fits snugly in the summer and one that is slightly looser in the winter.
If you are measuring using a ring gauge, it is best to measure during the day between 10:00 AM and 4:00 PM, and if possible, it is recommended to measure multiple times at different times and take the average value.
As mentioned above, finger size changes depending on the temperature, physical condition, and time of day, so it is best to find a size that allows for some variation without being too concerned about the "just right size."