The fourth installment of the series. These are women whose nipples are more sensitive than their vaginas or clitorises. As the breasts are touched and stimulated indirectly, the nipples become more and more sensitive with anticipation as the girl is teased. As the nipples are touched, they gradually become erect, and as they become rock hard, the girls' expressions and reactions are captured perfectly on two screens. [Please note that there may be some disturbances in the image and sound, but this is not a defect in the product itself.]