A menstrual cup is a reusable, bell-shaped device made from flexible materials like silicone or rubber. It is designed to be inserted into the vagina to collect menstrual fluid during a woman's period. Unlike traditional tampons or pads, which absorb fluid, menstrual cups collect it, making them a more eco-friendly option. Menstrual cups come in various sizes and can be worn for up to 12 hours, depending on the flow. They are easy to clean and can last for several years with proper care. Many users find them comfortable and cost-effective over time compared to disposable products.