Regular training strengthens the pelvic floor muscles and is said to increase pleasure. Strong pelvic floor muscles can prevent urinary incontinence and unwanted urine leakage, and can help recovery after childbirth. Even if you don't have any problems with our pelvic floor yet, a few minutes of training each day can change the way you feel. Pelvic floor muscles are necessary for many things, they strengthen your spine, knees and can intensify the orgasm. These kegel balls are in a set of 3, so you can increase the intensity of your training with time. The balls are easy to insert and remove with the retrieval strap.