I have the Smartballs, as well as the Luna Beads by Lelo. The Smartballs aren't very small, and don't take much effort (if any) to keep in. Same goes for the Luna Beads (which are just a tad smaller than the Smartballs).

I also have glass ben wa balls, as well as tiny metal ones. I've never really had problems with the glass ones randomly falling out (the only ones to ever do that were the metal, since they're so small). Nothing can become "lost" in your vagina, since the cervix acts as a barrier to the rest of your reproductive system. To take the loose ben wa balls out, all I do is squat or lay down and hook them with my finger (one at a time) to remove them.

[I have this philosophy that if you aren't willing to stick a finger up yourself to remove them, you really shouldn't be putting them in your vagina in the first place.]

Hmm.. yeah, I don't think I'd have a hard time getting them out, I'm just curious if anyone else has had issues with it.

I currently have a pair with a string link and was mostly curious about the loose ones.

Ohh.. that makes sense now. I like the balls I have, but it's not hard at all to keep them in, so I thought maybe they weren't doing anything for my muscles. That's very interesting, Lara, thank you!

The link doesn't work =\

Of course, the resistance to larger balls can really help muscle tone, so there are good reasons to use larger ones, like the Smart Balls. The balls also move around a little and getting to (or really learning to) make the ball bearings inside the balls move is GOOD exercise. I can see and feel the difference, even with larger balls like the Smart Balls. I grasp the first ball (the one without the loop attached) and push it in, to near the place where you would put a tampon, so it is behind the first set of muscles, while "fighting" it during penetration. Then I kind of push the second ball in (which is easy, because they are well connected) and then ONLY insert the second ball (the one WITH the Loop) until it only goes in far enough to keep my Labia Minora (inner lips) open, so it is half in and half out. It is a good vaginal muscle workout.

I, personally, don;t feel a benefit to only "keeping the balls in" if they are little, as the main point IS PC muscle exercise. From what I experience, resistance against the balls and against them and using the balls for vaginal massage are both good things to use them for. You can also pull on the loop, and try to keep the balls in, to help make your muscles more powerful. Also, you can FEEL the Smart Balls, and they are stimulating. Also, You do Kegals, while the balls are in your vagina. (Ask me for Kegal instructions if you don't know how to do this.)

I don't know how people can go out while using these, I get too turned on and usually end up having to finish myself up when I exercise with them.

Of course, masturbating to orgasm is good exercise, too.

I wonder the same thing, about the size of the balls.