The Asvani Ben-Wa balls are designed to be inserted into the vaginal walls. Once inside, the movement will cause the balls to reverberate and stimulate from the inside. In addition, consistent use of them (Kegel exercises) will strengthen the vaginal muscles for more stimulating sexual intercourse (this will benefit both you and your partner).
The balls are made of Borosilicate material, making them durable, non-porous, allergy safe, and compatible with any type of lubricant.
All prices are in USD.