I have worn these several months now & they are still my favorite guages. They are heavier & larger in circumference than they appear to be in the photo. However, they fit true-to-size (10mm), are smooth/comfortable, easy to clean & gorgeous
When I wear them I check to make sure they don't un-spiral themselves into pieces, but they did fall out once, so O-rings are probably a wise idea
I wish there were more guages like these, in an array of diverse colors & designs - I would buy more!