Full disclosure — this wasn't my first time trying a menstrual cup. In my hippie, unshaved armpits, sew-my-own-patchwork-clothes phase in college, I tried The Keeper, which was one of the first menstrual cups available. It's made of latex, and I tried it before I knew I had a latex sensitivity. Needless to say, my vagina was on fire, and I didn't last more than a couple hours with it.