A menstrual cup is a flexible cup or barrier worn inside the vagina during menstruation to collect menstrual fluid. Unlike tampons and pads, the cup collects menstrual fluid rather than absorbing it. Menstrual cups are usually made from medical grade silicone.
Manufacturers recommend replacing the cups between one and ten years. Disposable menstrual cups are also available – these work in the same way as a regular menstrual cup except they are disposed of after every use or (for some brands) after every cycle.