Made of pure, hygienic silicone, K Balls Textured are a unique addition to the Ben Wa Balls market. The design joins two oval-shaped spheres with a flexible stem, making them into a single waterproof piece that's easier to insert and remove. Inside each sphere, a weighted ball moves freely with each movement of your body, strengthening kegel muscles for better sexual experiences. The outside features a raised spiral rib design for extra stimulation, and a built-in retrieval cord enables easy removal when desired. Use only water-based lubricants with this toy. Color: Blue Type: Ben Wa Balls Material: Silicone Length: 4" Width: 1 1/2" Special Features: Pure Silicone, Waterproof, Ribbed