The cup is inserted like a tampon using the applicator. It allows you to position it correctly to avoid leaks and discomfort.  The set is reusable for 5 years and more environmentally friendly (replaces approximately 528 tampons per person/year)  The cup can hold between 2 and 5 tampons  The set allows you to spend less than £0,83/menstrual cycle (yes, cents), compared to £8 to £0 for tampons or disposable towels