Using the Yoni Egg improves the muscle strength of the vagina and pelvic floor and awakens your energy, passion and libido. The practice of strengthening the vagina with stone eggs appeared in ancient China. For many years it has been a secret practice, available only to members of the royal family. Since ancient times it has been used to improve the physical and spiritual health of women. Yoni in Sanskrit literally means sacred temple, and is also used to refer to a woman's vagina. This Yoni Egg is made of Rose Quartz. It can be worn alone or with the thread (included in the package).