Perfect vagina workout for more fun during sex. Wearing these love balls with a quiet vibrating vibroball interior stimulates, massages, and trains your vaginal and pelvic floor muscles for greater control and intense sensation during intercourse. Strap: 9 cm long. Ball diameter: approximately 36 cm. Weight: approximately 79 g. Material: ABS silicone, phthalate-free according to EU regulation 1907/2006/EC.