I've had the small size for a few months now and I absolute LOVE it. It took me about two cycles to figure it out fully and I am so happy with it! After having two kids and getting sterilized, I decided to remove my IUD, so my period came back. I loathe wearing pads and tampons just DON'T fit me properly any more and always leaked no matter what size or brand I tried. I was dreading my period every month. I got fed up and spent a TON of time researching cups. I felt Voxapod had the most comprehensive quiz to help determine what size I should get. After two pregnancies I have a mild-to-moderate uterine prolapse and also some pelvic floor issues so I was a little worried about what size would work better. The quiz recommended a small. Once I figured out the fold that worked best and the proper placement, I have had ZERO leaks and I can't even tell I'm wearing it. The stem was irritating me so shortened it, but then ended up trimming it off completely, and that solved the last of my issues. Truly has made that time of the month so much easier to deal with. LOVE MY CUP!!!