A:
Other than guessing, the best way would be to measure your finger much like you would to determine ring size. Try wrapping a piece of white string or strip of paper no wider than 1/2" around your first knuckle. Mark the string or paper where it overlaps. Then, measure the length of the string/paper to the pen mark.
Answered on 4/14/2011 by Renee L from Staples