We use US Standard sizing from sizes 5-13. Some of our styles are only available in specific sizes. If you don't see the size you are looking for offered on a product page, we can offer specialty sizing on a case-by-case basis at an additional cost. If you have any questions reach out to us.
To confidently know your ring size, the most accurate option is to have yourself professionally measured at a local jewelry store. Your ring size depends on the shape of your fingers. The ring should fit snug over the middle knuckle as a general rule. A ring is too small if it needs to be forced over the knuckle, and gets stuck. Keep in mind that Witness Company rings are heftier in band width and total weight than most other rings on the market.
Please contact us with any questions.