The "power balls" are designed more for the intermediate-advanced anal bead user. They are a larger size, with a nylon string connecting the five balls. These balls have a great sensation with a more "weighted" interior. They are definitely a bit of a challenge, but provide a great sensation. I definitely would recommend using lubrication, at least on the first ball. I use the cherry-flavored "Anal-lube" also sold on edenfantasys.com as it is great for anal penetration. By lubricating the first ball, it eases the path for the rest of the balls to enter.

I have only been able to get 3/5 balls in at a time, but I enjoy the challenge of working up to them. I initially started out with the "purple jelly beads" which were definitely for much more of a beginner. The power balls are definitely more of a challenge, so I wouldn't recommend them for a beginner.

The balls are covered in latex which is more difficult to clean since it is a porous material. I typically wash them before and after use, and have never had any major problems with cleaning them.

The nylon string connecting the balls makes it easy to get in. One of the best aspects of the string is that it is softer, and less rigid. The "purple jelly beads" I have are more rigid in their connection. The string at the end can be tugged on to provide a great sensation. This toy is great alone or with a partner during double penetration. My boyfriend loved the feel of the balls inside me, while he penetrated me vaginally. He could feel them moving around inside me, so while it was pleasurable for me, it was for him too! Additionally, when you pull the balls out, the sensation is overwhelming with the POP! POP! POP!