Smartballs Teneo duo - vaginal balls by Fun Factory - review by travelnurse

Double Balls

Well, I don't think that these are actually good for what they are marketed for. The duo balls together are just too big for me to use as a Kegal excersizer. I tend to have more of a workout at getting both of them in my vagina, and once they are in it is pretty full and actually hard to get out. I don't have to work at keeping them in place like I do with the ben wa balls.
Vaginal Muscle work out
easy to insert
Little too Large with both balls
cleaning with the textures
Rating by reviewer:
extremely useful review
Smartballs Teneo DUO

The Duo is vaginal excersizer. Sorry guys, these are for the women. The ball is for increasing your PC muscle strength, and increasing vaginal tone. For women only! When you perform your Kegals it does the same thing but this is more effective since you have a feed back system. Meaning you have the balls that you are trying to keep in. It gives the muscles more of a workout. Why work out your muscles you ask? Because having a stronger muscle makes sex better, can increase your orgasms. You can wear these vaginally while you have anal sex to increase stimulation for you and your partner. And as us females have babies and get fat and get older we can have issue with bladder leakage especially when coughing, sneezing, running or just from breathing!! Hey if you have had a baby, these can help you to increase your tone and get your vagina back in shape. Please make sure that you have been cleared by your OB before inserting these please.

The Duo has 2 balls that are attached to each other. Each of the balls contain a smaller ball that moves around and vibrates when your body is in motion. These vibrations stimulate the pc muscle to start contracting. This is a whole lot of fun in the rocking chair.


The Duo has an inner ball of plastic and an outer wrap of silicone material. It is completely waterproof. The outer casing of the Duo is made from Silicone, 10 on the Eden safety scale. The inner ball is made from plastic, 8 on the Eden safety scale. Both products are made from food safe materials, hypoallergenic, latex and phthalates free. Silicone products interact with silicone lubes, it can ruin their finish so be sure to only use water based lubes with the duo. The silicone is easy to clean, you can use antibacterial soap and water, toy sprays, Eden wipes, although the wipes may not be able to clean it properly due to the ridges on the silicone wrap. You can boil the duo, put it in your dishwasher, wash it with a 10% bleach solution. Be sure to rinse well after you use the cleaning solutions. Despite that is it silicone it doesn’t collect any lint or hair.


The Duo’s total length with retrieval cord is 7 1/4 inches, the insertable balls are each 1 ¾ inches long and 1.5 inches in diameter. They are 1/2 inches apart on the line. The Duo balls are small egg shaped balls with the silicone wrap on it. The wrap has raised areas that go both around the longer end and around the entire circumference of the ball. The swirl, they are not straight. Connected to the ball area is a retrieval cord that is approximately 3 ½ inches long and sturdy. Each of the balls have a small dip at the bottom of the egg that is perfect for your fingertip to sit when inserting the ball. When you hold the Duo in your hand and shake it you can feel the inner ball move around and vibrate inside of the outer shell.


The Duo is small enough to store just about anywhere. I keep it in a little bag in my drawer. Since it is silicone you need to keep it from other silicone toys so the finish doesn’t get ruined. I keep them in a plastic baggy.


The Duo doesn’t look like a sex toy, but it does look like some type of a toy. Be sure to keep these away from children or you may have some toddler running around with it in their mouth or even your dogs. It is travel friendly and you can even wear it while traveling.


The Duo comes from Fun Factory in a neat looking grey colored box. The box contains information about the Duo and the benefits from using it. You also receive a sample of their water base toy fluid.

On the box and on a package insert it explains:

Flexible removal band of silicone

Finger hollow “easy in” to assist with insertion

Velvet matte structured silicone surface

Perpendicular stripes for better sensitivity

Body compatible and easy to clean material


Extremely quiet and smooth
I like the whole idea of having a vag of steel but I don't feel that these work as well as the Uno or the good old ben wa balls. These are a chore to get in and I have an intense feeling of fullness and and intense need to pee! The whole premise is to work at keeping them in and not the feeling of being packed to the hilt. I don't have to work at keeping them in since they felt as if they are stuck. I would definitely suggest just having the Uno.
Follow-up commentary
These ones are actually a little big for the intended use. The balls seem like they are being stuffed in and you really don't have to work to hard to keep them in
I would suggest the uno instead. Especially if you have a smaller vaginal vault.
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My Smartballs Teneo duo tags
  • Who / How / What
    [ ? ]
    Who might this product be best for? How is it best used? What are the best circumstances or situations for using this product?
    • Can be worn under clothing
    • Masturbation
  • Where
    [ ? ]
    Where / what types of places can this product be used?
    • Anywhere
  • Features
    [ ? ]
    What kind of features does this product offer?
    • Travel friendly
  • Body / part areas
    [ ? ]
    What areas on the body can this product be used / what areas does it stimulate best?
    • Kegels
Do you like this review?
  • travelnurse
    Thanks for the comment!
  • Pink Lily
    Great review! Thanks for including pictures of the packaging!
  • RedKyuubi
    Thanks for the review
  • Carlie2010
    Great Review thanks!
  • travelnurse
    Thanks for the comments!
  • Creepellah
  • sweisb4100
    Thanks for the comparison photos. They really show how large these are.
  • travelnurse
    Thanks for the comments!
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