The perfect ring
should fit just right.

The perfect ring should fit just right.

How to use the sizer

Push the end of the ring sizer through the buckle to form a ring shape.
Tighten the ring sizer until the loop is secure in its position at the base of the finger
It should feel comfortable at the base of your finger with a bit of resistance while sliding it over your knuckle.
Read the size through the magnified glass.

Your finger size can change due to weather, temperature, and activity. For the best fit, size your finger multiple times under different conditions.

Try using the ring sizer while relaxing at room temperature, after moderate activity, and after washing your hands with cold water. Choose the size that feels best in all these situations.