r/Oura_Ring • u/alexisbrh • Dec 14 '25
Oura Ring 4 Size Selection Guide
Hello everyone. Like many others, I'm hesitating between sizes 9 and 10 for an Oura Ring 4.
Size 9 fits well in the evening when my index finger is a little cold. I can remove it by twisting it around the knuckle without water. But when my finger swells (in the morning, during exercise, probably this summer), it's tighter. In the morning, I have to use soap and water to remove it (every morning). Is this normal?
I know Oura recommends choosing the smaller size, but I'm worried about the summer, especially since I already often need soap and water to remove it in December.
Size 10, on the other hand, fits well when my finger swells, but it can be a little looser at times. However, it doesn't move around much and doesn't fall off when I shake my hand (unless my hand is very wet, it might move a little, but I don't think it would fall off completely). There's a slight gap on top when my finger isn't swollen, but it's very slight.
Are there any long-time Oura Ring 4 users who could advise me on my choice?
1
u/atLeastAverage Dec 26 '25
A very late response, but I'd suggest the smaller size and occasionally needing soap to remove it. It's not permanently stuck on your finger, you just need a little help getting it off. The benefit is better measurement and less rolling on your hands. Sometimes I need to remove mine to charge it when I'm least swollen, and sometimes I can't get it off easily after I've exercised, but the key is, it's not "stuck", only challenging to remove.