These love heart duo balls are made from a soft but firm silicone rubber material encasing weighted steel balls. The raised love heart patterned silicone provides added stimulation and the encased weighted steel balls move around with the slightest movement of your body. The movement of the weighted steel balls creates a truly orgasmic experience as the love heart Duo Balls gently move around inside of you. As an added benefit, withdraw the love heart duo balls very slowly at the point of climax for an unforgettable experience. Each of the love heart duo balls measures 27mm (1 inch) in diameter, overall length (including cord) 230mm (9 inches) and the love heart duo balls are joined by a secure and flexible silicone retrieval cord with convenient finger loop.