Exercising with yoni eggs will have a lot of fun and a pleasant sensation, it has also been shown to improve vaginal tightness dramatically when compared with normal pelvic floor exercises. No matter how old you are or how many children you have had, youll see a change in your tightness in a matter of days. Features - Material: Stone - Size: 5x3.5x4cm/1.97x1.38x1.57in - When you use this egg for pelvic floor kegel exercises, they have an amazing effect on your vaginal tightness.You can use them to stay tight as you get older, or even after giving birth multiple times. - The yoni Kegel exercise eggs are great for strengthening the weak pelvic. - Putting it into warm water for a few minutes, then disinfecting it with boiling water.