Yoni eggs are used for pelvic floor training. If you have mild incontinence issues, you can practice with a yoni egg daily to strengthen and tone your pelvic floor. This set of three GIA Certified Nephrite Jade Love Stone Yoni eggs is designed to allow you to start your kegel practice with a large size and work your way to the small as your pelvic control increases. This beginners set of three is perfect for you to explore with the three different sizes, rather than just one size, which may not be right for your pelvic floor. Every woman has had different experiences, be it childbirth, surgeries, trauma etc and thus will have different needs for their pelvic floor.