1.The nail must be naked when measuring.

2.Measure the widest radian from left to right of the nail surface.

If there is no soft ruler. We can also use non-breakable paper towel.

1.   Mark the widest parts on the left and right sides of the nail surface.

2.   Measuring the distance between two point is the curvature of the mask.

After all fingers are measured, refer to the size chart to find your corresponding size.