"sex adult product factory" teach you a pair of symmetrical arrangement of small cartilage inside the vagina with your fingers when struck any one of which will feel very comfortable. Of course, this is to pose higher requirements within each woman's vagina that cartilage locations are different, and there is a lot of randomness. "sex adult product factory" is sometimes limited to only a gesture to come, if the other party changing position, cartilage will immediately disappear touch vain. So sometimes have to support her body, can not let her free to swing, or a stand and excitement will be in your hands without a trace, find it vain. "sex adult product factory" because of the uncertainty of the positioning of cartilage, usually do not go looking for excitement is too much emphasis on it. More detailed information may also take a long time to explore.