Size a recommended for those who are 30 and over and all who have given birth vaginally regardless of age the mooncup is a reusable menstrual cup around two inches long and made from soft medical grade silicone it is worn internally a lot lower than a tampon but while tampons and pads absorb menstrual fluid the mooncup collects it this means it doesnt cause dryness or irritation and also that it collects far more three times as much as a tampon because the mooncup is reusable you