Femme Toys from Nasstoys. Toys designed by women for women. The Ben Wa Balls. Please yourself anytime, anyplace. These silky smooth coated balls fit snugly in place providing subtle, yet incredibly sensual vibrations as they contact each other Inserted into the vagina or anus, the vibrating effect of the balls movement will provide irresistible stimulation. Ben Wa Balls are connected by a nylon string with a handy retrieval ring. Non-vibrating balls use kinetic energy. Can be used in conjunction with Kegel exercise to tighten the PC muscles. Made using phthalate free, non-toxic materials ABS plastic. ABS is hard plastic, non-porous, durable and easy to clean and maintain. These balls are covered with other velvety soft materials. All types of lubricants may be used with hard plastics. ABS products are safe, pure plus phthalate free. Always clean before and after use. The Ben Wa Balls from Nasstoys of New York.