These are Ben Wa balls with smaller balls inside to provide some vibration. I believe they are primarily intended for use as a Kegel exerciser, but they may be good for use as anal beads. I use them to strengthen my PC muscles since having children has diminished my bladder control.

The Luna Balls are made of a hard plastic shell containing a weighted rubber ball. Each set contains four balls: two lighter-weight pink and two heavier blue balls. The balls can be worn individually or in pairs using a silicone girdle. When viewing the pictures, I was afraid that the balls would have a rough molding edge, but they do not; they are very smooth and seamless. I've had children and did not find the size to be a problem, but they may not be right for everyone. They smelled mildly of packaging when first opened, but the odor disappeared after washing.

I find the Luna Balls to be comfortable and forget they are in until I bend over! Changing positions or strong motions set the smaller rubber balls to rolling about, which is pleasant but not exactly sexually stimulating. The size is a good fit for me, but may not be for everyone. With the Luna Balls, I don't have to work at all to keep them in place, but I can tell they are working the muscles. The Luna Balls are plastic and small enough to fit in a large pocket, so carry them on or, better yet, wear them right through the metal detectors!

I mostly purchased these to help with bladder control, which it seems to be helping with. I chose the Luna Beads over other Kegel balls due to the "Pleasure Bead" title. I find them pleasant when I notice them, but they are not as stimulating as I'd hoped.

As with most Lelo products, the Luna Beads came with a very nice box for storage. They are non-porous, waterproof, and easily cleaned with soap and hot water.

The Luna Balls, like all Lelo products, came in this sexy black box that was sturdy enough to continue to use for storage. Instructions and the Lelo warranty booklet were located under the tray for storing the balls.

I like that the Luna Beads give my PC muscles a workout without conscious effort on my part. Their size is a little large, but I know they won't just fall out, say, while I am at work---awkward. I also like that they are made of plastic instead of metal, so I don't have any explaining to do at the metal detectors. I had hoped they would stimulate me sexually, but they are just nice feeling.