The Teneo Duo Smartballs are a vaginal exerciser, designed to strengthen the pc muscles. The diameter of the balls is 1 1/2 inches, which might not seem all that large, but I think that ladies with a smaller frame might have difficulty inserting and being comfortable with these. If you could use a good tightening and are up for the size, definitely grab these balls! The outer material is silicone, so a good water-based lube can help with insertion, if needed. Let's keep the silicone-based lube away from these, as the instruction manual does say that an odor may occur if a silicone-based lube is used.

So, we've established that the SmartBalls are made of silicone (and water-based lube only!). The balls have a smooth, velvety kind of texture with some raised surfaces as you can see in the picture. Once inserted, I can not feel the ridges, although I suppose they must do something. When held in my hands, I can feel the balls jiggle if shaken. Once inserted, the balls do cause some very mild, and I stress VERY mild vibrations....I think of it more as a jiggly feeling more than vibration though. I have used lube for insertion on a couple of rather dry occasions and yeah it helps for getting them inside, but I prefer not to use lube because I think I get more feeling from using my own juices.

A couple balls linked together by a little connecting piece of silicone, and a handy loop to pull them out. Sounds pretty simple, right? Maybe it is, but I think the design of the SmartBalls really shines once you try to stick them in...at the end of the second ball is a little notch to you can stick your finger on that notch and give them one final shove. I use that notch to get the second ball partially in, and then let my muscles just suck them in the rest of the way, sometimes I still need to push them in a little more though.

When they're ready to come out, the little loop comes into action. Just give it a gentle pull and the second ball pops out, pull a little more and the first one comes back out. Sometimes my muscles have a death grip on these balls and it takes a bit more work to get them out, but still, it's pretty easy to remove the SmartBalls. The loop is handy, but I find myself wishing it weren't there because it gets in the way. Let me explain...once inserted, the loop is the only thing that isn't inside the vagina. So, it just kind of dangles. I try to lay it down in my panties, but I can usually feel it, which is annoying. A smaller loop would be nice.

At 4 3/4" circumference, these balls aren't small, but they're not overly large either. For me, the size is perfect! If I have a problem with insertion, it's the second half of the second ball...and that's only if I'm really dry and too lazy to grab the lube. Masturbation helps in these situations. Oh who am I kidding? Masturbation always helps!

SmartBalls are meant to strengthen the vaginal muscles. I've been using them for a couple weeks and I swear my muscles feel stronger. It could just be that I'm more aware of the muscles and I pay more attention to when I 'flex' them. During sex, I can grab my husband's dick more with my muscles and he can feel when I do it, more than before I started using the SmartBalls.

I can feel the balls pretty much all the time, but especially if I flex my muscles. I have found that if the balls start slide down towards my vaginal opening, I can feel those jiggly vibrations more and more the closer they get to the opening. It's not like they're ever going to just fall out, but sometimes the SmartBalls tend to sorta slide down when they're inside and creep closer to my vaginal opening, especially if I'm jumping around or being pretty active. I really enjoy this feeling though, so I have been known to jump around with them inside! :P Also, if I'm walking and just abruptly stop, I can really feel the SmartBalls even more...it's so fun, you have to try it!

Oh and get super wet when I'm wearing my SmartBalls around!

Caring for my balls is a breeze...soap and water is all that's needed to clean them up. Remember, silicone toy, so no silicone lube! Since I don't yet have a nice little toy box, I store my SmartBalls in their original packaging, which is a little tray with indentations where the balls go. This probably isn't the most ideal way to store them, but if you wash before and after use, it should do fine.

The SmartBalls make me super wet when I have them in for a couple of hours, not like dripping wet, but more like extremely lubricated. I typically just wear them around the house or on short errands around town. One time I even mowed the yard with them inside me...pretty fun since our yard is mega bumpy. I haven't worn them to work or for extended periods of time, as sometimes I just don't want them in for a long time. It is quite a turn-on to know that I'm wearing my SmartBalls and nobody else knows. My husband calls them CockBalls, I don't know why, but I find it quite funny. Sometimes I tell him that I gotta go put my CockBalls in and that alone gets him all hot knowing that I'm gonna put them in. He LOVES to watch me insert them, and especially when my muscles just suck them right in.

I got the green color because I love green and it's the color of envy. I thought my color selection would be a funny reminder of why I chose green every time I look at them. If only everyone knew how much fun (and how rewarding) SmartBalls could be, they'd all be green with envy! I still chuckle to myself when I'm getting them ready to use.