Strengthen your pelvic floor and enhance the tightness of your muscles with these duo balls. Beginners should start with using these balls with the removable sleeve. Experienced users can use them without the sleeve for a more intense pelvic exercise. The free weights stimulate as you benefit from using these kegel balls. Improve your significant other's intimate experience by surprising him with a more toned pelvic floor! He'll love it! This duo set comes with it's own toy storage bag!