What is the best size for someone who has a heavy flow?
You may want to look at a menstrual cup with a decent holding capacity. However your age, amount of vaginal births, fitness level, and other factors need to be considered before you opt for a larger menstrual cup size that may not be as comfortable. Many smaller sized menstrual cups do boast ample holding capacities that will accommodate a woman with a heavy flow. So do consider ALL of the guidelines when selecting a cup size.