I purchased these out of curiosity. As a first time buyer, I would go with something smaller and something that will require you to work your muscles to actually keep them inside you. I did enjoy it and will continue to use them.

They are a decent size, but the plastic makes it harder for them to slide in easily and comfortably. The fact that they are not noticeable at most times can help you get used to wearing them out in public without being nervous about blowing your cover. They are easy to care for and clean and are extremely affordable. All in all, it's not a bad product. The pull cord makes for easy removal and added peace of mind. The material could have been better, but it does not have any restrictions on type of lube. Also when pulling it out I was so afraid that the pull cord was going to break off inside. That part makes me a little nervous.

Overall I find the experience enlightening, but I was expecting a little more.

Material: The balls are hard, smooth plastic with a nylon cord. They don't have any particular odor, and they feel intriguingly heavy in your hand. The inner ball is metal of some kind, and it makes quite a bit of noise rolling around inside the plastic, which is muffled sufficiently once the balls are inserted. The noise issue arises in storage and transportation situations rather than when in use.

Performance:
As I was carrying the package back from the mailbox, there was a strange sound coming from inside. It was a sort of rattle. When I set the box down, it rattled again. I had no idea these were going to be that noisy; some reviews had mentioned the sound, but I was surprised.

When I was wearing them inside, I only heard the rattle when I intentionally shook myself, which was whenever I walked past the husband. You can definitely hear them, though.

I had no problems with the size, but I did have an issue with the length of the cord between the two balls. I felt it would have been much more beneficial for me were it to have been half the length.