A menstrual cup is a type of reusable feminine hygiene container that is inserted into the vagina to catch and collect menstrual fluid. It is a small, flexible funnel-shaped cup made of hypoallergenic medical-grade silicone. Size S usage recommendation: Recommended for women under 20 years old, of small build, with medium-low flow, and who have not had children through vaginal birth. Expiration date: A specific expiration date cannot be established, although it is estimated at 10 years and will depend on the proper use and care of the product. The manufacturer recommends replacing it every 5 years.