Here's a bit of sexual health mathematics for you: combine completely classic styling plus dynamic, organic vibration multiplied by extra-manageable weightiness equals Blush's Luxe Double O Beginner Kegel Balls. It's true! Shaped into two smooth swells, the Double O's nestle naturally along the curves of the vaginal wall, helping you target your pelvic floor muscles. These magic muscles are responsible for improved inner snugness, better control of continence after childbirth or surgery, the possibility of stronger, more intense orgasms and an overall happier vagina. You'll grip and release the Balls during kegel exercises or you can forgo the workout and focus on deep inner sensation. Options!That inner sensation we just mentioned come courtesy of a free-rolling weight at the core of each Double O. When they (or just one) are in place, your movement, whether it's internal flexing or just walking around the room, will set the weights to jiggling.Perfect for kegel practitioners just starting out, the Double O's are just .8oz (22.7grams) each. Insert one at a time to get the full effect, or just give a single Ball a try.In body safe, phthalate free ABS plastic, the Luxe Double O Beginner Kegel Balls clean easily using warm soapy water or a good toy care fluid/foam. Compatible with any favorite water or silicone based lubricant.*The Balls measure approximately 1.25" (3.2cm) in diameter.