Thankfully, you don't need something that bulky to measure your ring size at home. Instead, Greener recommends picking up a ...

Choosing your perfect ring is an exciting moment, whether it’s your engagement ring or wedding ... then compare this number to a size chart from Best Brilliance to confirm your ring size.

You can find the approximate internal dimensions of each Ring 3 size below. The above table should be used as a guide, and we don’t recommend using the dimension chart to pick an Oura Ring size.