In theory this sounded great, but a one size fits all is not a good idea. Why is it that there are various sizes of condoms, but this method of BC only has one size?
The main problem is that it would not stay in place. It kept sliding down. Not out, but down. I would be walking around at feel the thing sliding down. While I was washing in the shower I felt the ring poking out. Each time I went to the bathroom it would slide down even more, and I'd haveto push it back in. I pushed it as far back in as I possibly could, but it kept sliding down. I also had mild pain in the vaginal area on the first day, and it didn't stop. The third day I started feeling mild pain in my legs. I googled NuvaRing sliding down and found that it's not uncommon for the NuvaRing to slide down. After reading the other reviews and finding that it was not going to stay in place I threw it out. I'm using the sponge until I can get my tubes tied.