A good set of ben wa balls if you already have experience and know what you want and need. I love these as a second option when my one-inch balls were not enough.
The most helpful critical review
An Awkward Intro to Kegel Exercisers
These were my intro into Kegel exercisers. The fact that they have no retrieval cord is an issue for me, and makes removal difficult. I wasn't even really able to feel the weight of these when inserted, they didn't do much of anything for me.
An ancient technique, ben-wa balls are also sometimes called geisha balls and are used for vaginal stimulation and toning.
This set consists of two marble-sized balls that are to be inserted vaginally and manipulated with the internal muscles. This can produce pleasureable sensations from the balls' movement against each other, and will give your internal muscles a good workout from the effort of holding them inside.
By exercising the pubic floor muscles, ben-wa balls help strengthen the vagina for more intense orgasms. These toys are made of ABS plastic coating on a weighted metal core, and weigh approximately one ounce each.
Material / Texture:
Food-grade material / Hypo-allergenic / Latex free / Phthalates free