1. Wrap a piece of string or a strip of paper around your finger.
2. As precisely as possible, mark the point where the ends meet.
3. Lay the string flat next to a ruler and measure the length.
4. Find the corresponding size in the chart below.

Important tips

• Measure in the morning and at night and use the largest measurement.
• Avoid measuring when your hands are cold.
• If your knuckle is thicker, choose a size that slides through without tightening.
• When in doubt, choose the larger size.