Don’t know your ring size but there’s a ring online you really want? Then this is freebie for you. Head over to fill out the short form and have your Free Ring Sizer sent to you in 7-8 days.
From their site: Finger size changes depending on the time of day and the weather. For best results measure your finger size: At the end of the day and when your fingers are warm (Fingers are smaller in the early morning and when cold.) Measure finger size 3 to 4 times to eliminate an erroneous reading. Avoid using string or paper to measure ring size as these materials can stretch or twist, yielding an inaccurate measurement.