This product is designed to provide a more sustainable and comfortable alternative to disposable menstrual products. Our reusable menstrual cloth menstrual discs are made from soft, breathable fabric that is gentle on the skin. They are designed to be worn up to 12 hours and can be reused for up to a year
From Wikipedia
A menstrual cup is a menstrual hygiene device which is inserted into the vagina during menstruation. Its purpose is to collect menstrual fluid. Menstrual cups are made of elastomers. A properly fitting menstrual cup seals against the vaginal walls, so tilting and inverting the body will not cause it to leak. It is impermeable and collects menstrual fluid, unlike tampons and menstrual pads, which absorb it.