Pee Safe Menstrual Cup is a reusable feminine hygiene product. It’s a small, flexible & super comfortable funnel-shaped cup that you insert into your vagina to catch and collect period blood. It can be used for up to 5 years, making it an economical & sustainable product. The cup is made of Medical Grade Silicone. These Reusable Menstrual Cups are available in 3 sizes - Small, Medium and Large. These cups can hold up to 21 ml of blood and no, it doesn’t leak and instead provide protection for up to 12 hours. On an average, we bleed just about 20 ml a day but remember the thumb rule with any period products; keep a check every 4-5 hours. You can wear your menstrual cup which makes a safe option to sleep in. You only have to be concerned if you have a heavy flow and may require to change it sooner than that. You'll be able to understand it better once you start using the menstrual cup and keep note of the flow of your cycle.