Many a love song has been sung about wedding bands, but what it really comes down to is communication. A man's wedding band says to all other women that "he's taken".
When you go shopping for a wedding band, make sure you know your ring size. If a professional is not on hand, then all you have to do is cut a strip of paper and wrap it around your finger. Tape it together in its ring shape and make a mark where the paper meets according to the fit. Then, take the strip apart and measure it. You'll need a ring size chart to interpret the measurement, but that's not hard to find. Do keep in mind that different countries may have different standards when it comes to ring sizes. In the US, men's rings generally lie between size 8 to size 14 range. Anything extremely larger or smaller, you may need to have to custom design the ring.