I bought this toy with all intentions of beginning kegal exercises----I excitedly ripped open the box when it arrived at my house midday to find two fairly large sized balls. I went ahead and used some regular KY warming liquid that I already had (rather than the lube that came with them) and proceeded to test drive my new toy. Long story short....they are waaay to big for me. The size made the Smart Balls very uncomfortable and sadly, yes, unenjoyable. The concept is a very good one though---perhaps there are some ladies out there who have concerns like my sister, (i.e. already had two kids so the 'girl' is just not the same anymore), and not only can they (A) probably take the size of these guys, but (B) they can also put them to work tightening up those blessed muscles. Overall like I said: great concept, just wish they made different sizes. Also, it's great that the material is safe and the attached 'string' has no metal on it, so no need to worry about scratching.

The material rating on these Smart Balls was pretty high. They were very easy to clean----not the 'jelly-like' material like some past vibes I've had... I believe they were silicone. They would probably be best for more advance users; however, the material is very smooth and makes insertion fairly easy.

The Smart Ball design was well...smart! I did like how the two balls were connected, so upon extraction you don't have to worry about 'fishing' out a trailing ball. The variety of colors also make them fun, (because you actually have options), and the string also makes extraction a snap! The 'vibrating' sensation that they give off when you move is very nice and pleasant--nothing too over the top, but definitely something that will keep you moving intentionally!

The overall concept is a good one: attached kegal balls that 'vibrate.' However, it would be nice if different sizes would be offered in the future.

Smart Balls are super easy to care for. There is really no maintenance involved, only wash with antibacterial soap after use and let air dry. No batteries to buy, YAY!

The packaging for Smart Balls was exceptional. There were easy care instructions included, but directions were to be assumed by the user, (pretty easy to figure out the use though). The box cannot be used as a gift or storage box, as it is cardboard with clear plastic facing. I suppose if someone wanted to they could save the clear plastic insert mold to put the Smart Balls back in after every use, but it wouldn't be entirely practical.

I'm sad that I was unable to use my Smart Balls!! Please please please Fun Factory: make various sizes! This is a wonderful concept for an array of use and I don't want to get left behind!