The Organicup is made from 100% medical grade silicone and is allergy certified. It has been tested to last for years with proper care. The menstrual cup can contain more fluid than a tampon and can be left in for up to 12 hours. It comes in three different sizes; A for those who have not given birth vaginally, B for those who have given birth vaginally and Mini for teens and those who need a smaller fit.