Ben Wa balls are intended to strengthen the PC muscles by stimulating the vagina while inserted and adding resistance when doing kegels. These are a largish set of balls, with somewhat heavy weights. They're excellent for all levels of use, however if you're not used to having something inserted in your vagina for lengthy periods of time it can become uncomfortable if worn for a full day.

These are great for both foreplay and for toning the PC muscles (which has numerous benefits from stronger orgasms, to decreased likelihood of post-menopausal incontinence). They come in a variety of beautiful colors (I particularly love the shimmery pink) and because they're such a weird futuristic looking object, you can easily leave it on your night stand and people will assume it's a weird little ornament.

Again, they are a large-ish vaginal exerciser, and may be too long for some women, however their larger size does make them good for women with weaker PC muscles, for example women who've given birth.

I do NOT recommend these for anal play. They do not have a flared base, and have the potential to "get lost" inside the user if used for anal play.

Smartballs are made of high quality elastomer, and are very firm with a velvet/satin type texture. Elastomer is scentless, tasteless, and quite easy to clean. Smartballs have small indents around the small color accents surrounded by a slight indent, meaning that there're some place you'll have to make sure to scrub when cleaning, however the indents are not noticeable when the toy is inserted.

This material is wonderfully body safe, and generally highly agreeable.

Each ball contains a small, but heavy weight that rattles when you walk, thus producing the sensation.

These are beautifully designed, they're pretty enough to mistake for a christmas ornament, and they come in a really beautiful selection of colors. They're on the larger side, 4 1/2 inches long, and each ball is a little smaller than a peach pit. They're nicely rounded, and the juncture between the balls is quite flexible, though they can be a little finicky to insert (make sure you use a good sized dollop of water based lube). The retrieval cord is sturdy, and the entire piece is generally well made and with proper care should last a very long time. These balls are nicely designed for sensation as well, you can really feel the weights moving when you walk, and stairs are well, practically orgasmic. That said, if you're prone to distraction by sexual sensation these may not be the best for you for day to day wear.

These are fantastic, they're perfectly quiet, you can hear them rattle if you shake them right up against your ear, but once inserted they're silent... and really who's putting their ear to your vagina? In any case, no one but you will know you have this delightful little toy in, unless you're naked in front of them and they look closely. The vibrations are surprisingly intense, I've used several kegel exercisers and of all of them, these have the most intense vibrations. The sensation they produce is arousing, teasing, and wonderful. It's not enough to get me off, but it's enough to rev me up and get me raring to go, and my girlfriend enjoys them too. She generally doesn't feel ben-wa style exercisers very much, but these she loves. They also work wonders for strengthening the PC muscles, after about a month of use I've found my orgasms have gotten far more intense, and I can hold a strapless strap on in with far more ease than before.

These are not hard to care for. All you have to do is wash with warm water and anti-bacterial soap. The little indents do require a little attention to detail, but it's really not too much of a hassle. They don't seem to attract dust the way silicone toys tend to. They're compatible with both silicone and water based lubricants, and incredibly easy to store, because of their discreet design.

They come in a beautifully designed little cardboard box, which holds a little clear plastic case which contains the balls, the cardboard box has a nice little magnetic closure and is so pretty that I've kept it to store the balls in.

I really do adore these. I even bought a second set in different colors simply because both my girlfriend and I love them so much. Interestingly, I noticed that there's a slight difference in texture between the two finishes, the matte Smartballs have a velvety texture, and the shimmer ones have a more satin type texture.