These vacuum suckers feel great on nipples of course, but they can really be used to draw blood to any area of the body. I tried one on my clit for just a few moments, and the swelling was significant. The suction is powerful and can stay on for a long time, so these are perfect for more advanced users. However, newbies can work up to higher levels of suction, while still enjoying these little gems.

There was no smell when taking these out of the package. They appear to be well made out of thicker plastic, which is totally rigid. The twist tops turn easily to create more suction, but aren't so loose that they unwind at high pressure. Overall, they felt nice and substantial. They were definitely bigger than I was expecting however.

Given the large size of these suckers, it is difficult to isolate suction to only the nipple. I personally enjoyed having more of my breast tissue stimulated, but if you are trying to target a specific and small area with suction, these will not work. If you have really large nipples, these will be fantastic. The suction is easily lowered by turning the tops counter-clockwise, releasing the tissue.