These fantastic silicone vaginal balls with free-moving balls inside will offer you amazing stimulation throughout the day, while also helping to tighten and strengthen your vaginal walls. Simply insert the two balls with the silicone tail remaining outside. The Kegel balls feature lighter balls inside silicone covers, and with every movement you make, they will move and create a tapping sensation. Not only will you feel great, but your muscles will contract around the balls, offering stimulating vaginal exercise like no other.