Promise rings are not the only rings for your dear ones and couples wedding rings set are not the only rings that come as a pair. A couples ring is a pair of rings that are made to complement one another in design and finding the correct size can be a hassle. We have done the hardwork for you and put together a complete chart of matching ring. The sizes here are the ones mass produced and therefore mostly adjustable. A couple ring can be custom made so as to improve sizing options.