Cindy Dollar is one of our easiest HuCows. She still needs bondage, but we can basically do anything to her. She is often used to test new machines and positions. Like today, when we wanted to find out if the vacuum power for triple pumping can be even higher than we ever tried. It would be very hard to get through a session like this, but if anyone can do it, it’s Cindy! It’s great to see clit pumping work so well, her clit becomes swollen right away and it pops out of hiding. The strong vacuum means that her nipples are tripled in size right from the start, and they will go up to four times by the end of the session, almost filling the cups! Of course, once the pumping stops, everything seems to go back to normal and many people have asked what the purpose is of this training. The answer is in stretching! Skin stretching is the most important step in growth! Nipples need to be pulled as often as possible, by clamps or vacuum power!