Vaginas are not cup shaped and neither is this fabulous menstrual cup. I struggled with leaks for 3 years with traditional cups before finding the Fun Cup - and I haven't leaked since.
I have the Explore Pack, but size B never sealed right for me. I've used my trusty size A through ballet classes and performances, yoga practice, and Pilates mats classes with only the teeniest seal breaks in standing splits and plow - which no cup can withstand.
I have been using the SAME FUN CUP since 2017 and it is now 2022. Longevity?! Check.
You might think it would be hard to get the placement right because of the shape, but I find that it actually assists because it really finds the contours of the body as I twist into place.
10/10 recommend this to every single person with a vagina and a cycling uterus.