The Discover Duo Balls are perfect for strengthen your reproductive muscles, toning you and making you more sensitive to sexual contact in the long run. You can wear the non-vibrating balls for slow, discreet stimulation throughout your day, and then swap them for the vibrating ones when you get home to enjoy the powerful vibrations and bring yourself to a powerful, satisfying climax. The casing in which the balls sit is pure silicone, making them soft and comfortable to wear, even for long periods, making these the Discover duo balls perfect for pleasure in the bedroom... and beyond.