Vibe Therapy Terah is a newly designed set of duo balls made of 100% silicone and ABS plastic. Terah will give a vibrating effect every time you move, rattling about inside for amazing sensations. These love balls are a true pleasure and a great addition to foreplay. Try wearing them when you go out for a night out! How long do you think you can last before the scintillating sensations overwhelm you? The Vibe Therapy Terah includes a luxurious storage pouch too. These are the pink Terah Duo Balls.