Adam & Eve Scarlet Couture Glass Duo Balls. One of the kinky toys you've read about in erotic novels, Ben Wa Balls make a wonderful addition to any toy chest! Often used in popular erotic novels. Exercise with the balls for greater control and stronger stimulation. Great for low-key stimulation for long periods of time. Change the balls' temperature for extra stimulation. Retrieval ring on end for safe & easy removal. Balls can be removed from the silicone harness. Measures 1 inch wide and 3 inches long, insertable. Balls are made from hypoallergenic glass. Harness is made from smooth and stretchy silicone.