If you're unsure whether resizing the ring is necessary, we recommend ordering it without resizing. Many customers find that the ring fits as is, since there’s a margin within sizes. Ring sizes vary by just a quarter millimeter. Also, sometimes a ring fits on a different finger or hand, like the fingers of your dominant hand being slightly thicker. Temperature can also affect the fit, and keep in mind that wider bands tend to fit more snugly than narrower ones, due to the larger surface area around your finger.