The Sienna Concerto is a silicone G-Spot vibrator from Mantric. It has a 5 1/4" insertable length and it's 1 5/8" in diameter. The shaft has a bit of a curve to it, so that it can reach your G-Spot. Some might find that it doesn't have quite enough of a curve and the Concerto cannot be bent; for me, this did not allow the Concerto to find my G-Spot. While it's meant for G-Spot stimulation and internal use, it also does a great job for clitoral stimulation. There is a ridge on the top of the shaft that, if positioned right, can allow for some clitoral stimulation while giving some somewhat shallow vaginal stimulation at the same time.

It does not have a flared base so it would not be ideal for anal use. I personally think it's a bit too big and rigid for that anyway.

The Concerto is made out of high quality silicone. It's smooth but it does have a bit of a drag to it. I find lubrication is definitely needed with this silicone. Sometimes I can use silicone without, but this is definitely not one of those times. There is a slight smell to the product at first, but I think that's mainly from the plastic shrink wrap that it comes in. Once it's washed, that starts to dissipate.

There isn't any actual texture to the silicone except for at the base, there are a few ridges. I couldn't feel them during use, but if you're really sensitive you might be able to feel them at your vaginal opening.

One thing that I really didn't like about the material is that there are visible seams running down the sides and you can feel those seams as well. Also, there is absolutely no give to this toy. It's solid as a rock. Underneath the silicone is solid shaft that is molded to the shape of the vibe. Even the tip is just about solid, although there is the slightest bit of give at the tippy tippy top.

The Sienna Concerto appears to be a girthy toy, but it feels even bigger than it is. The way that the Concerto is designed does not allow any kind of give or bend and so it is not forgiving in the slightest. I have used toys that are bigger then the Concerto's 1 5/8" diameter with no trouble, but with this guy I needed lots of lubrication and had to go really slow.

The reason that the Concerto feels as girthy as it does is the way the shaft is designed. There is a hard ridge on each side of the shaft and then along the bottom of the shaft as well. At the head of the shaft on the underside, the Concerto has a ridge, kind of like a realistic penis would have, although this one is not pliable. On the top side of the shaft you have the G-Spot curved tip, which in itself is not uncomfortable, but then down the shaft a bit further is a second curve, which would be quite nice...if it was flexible. But again it's not, and there is a solid ridge underneath the silicone. The shape almost makes a diamond shape with the four ridges and it wasn't very body friendly, at least not for my body. If it was flexible, I think it would feel quite nice as the shape seems to have good promise; it's just the rigid execution wasn't a win, at least not for me.

If I warm up with another toy first and make sure that I use a lot of lubrication, I can use the Concerto without much trouble, although I do still need to be careful of the movement I make with it. This is definitely one that I need to thrust slowly. I can't get too carried away with this one and I can't use a rocking motion at all.

The controls on the Concerto are very easy to operate. At the base of the shaft before the battery cap, there are two buttons. You can press either one of these buttons to start the vibrations. If you start with the lower button, it takes you through the vibrations from steady vibration first. If you start with the top button it takes you through the other way. There's no designated off button so you need to cycle through to turn the vibe off. The vibrations and vibration patterns are as follows:

1. High Vibration
2. Medium Vibration
3. Low Vibration
4. Three Pulses and an Escalation
5. Roller Coaster pattern with two pulses in the middle
6. Slight escalation, two pulses, larger escalation, two more pulses
7. The Pulses of Escalation
8. Two low pulses, One long high pulse, two low, another long high
9. Low short, long high, low short, long high
10. Rapid short high pulsations

The vibrations are all deep and they are carried throughout the shaft really well. In this sense, the solid inner core is a benefit as it definitely does create some intense and throbby vibrations. The Concerto is also pretty discreet sounding. It's not silent, but for the power and the size, it's pretty good. You can't hear this through a closed door at all.

The Concerto is also waterproof and the battery cap is well made and screws on nice and tight. There's no concern of water getting into the motor. There's also an O-Ring for added assurance. Although, like I said, you need lots of lube with this bad boy, and since it's made of silicone you need to stick with a water based lubricant. This can make water play tricky with the Concerto and I found it was best kept to dry land.

The Concerto is easy to clean as there aren't any deep ridges for anything to get stuck in. It's made out of silicone, so it's easy to sanitize, and it's nonporous. You can use water and a mild soap or toy cleaner after each use. A 10% bleach solution can also be used to sanitize. Because of its electrical motor, you shouldn't boil the Concerto or put it in the dishwasher.

The silicone does pick up lint rather easily though, and that can be a bit bothersome because if you put it down on the bed or anything while using it, particles will be stuck to it by the time you pick it back up. I just try to be careful to avoid putting it on any kind of fluffy blanket or anything and it's not too bad straight on sheets.

When storing your Concerto, take care not to store it touching any other silicone toys to prevent them from melting into each other.

The packaging of the Concerto is really nice. It's a nice thick cardboard box that lifts off from the top. The box is not discreet as it shows a picture of the Concerto right on the top, but it is more classy than some toys come in and there's a lot of information about your new toy on the box. There's a diagram on the side that shows you the different patterns, which is nice.

Inside the box there is a red molded tray that's made out of plastic with a velvet type finish to it. The Concerto sits nicely inside and I use this to store the toy. Some might not like to do this though, as the velvet finish does leave a bit of lint on the vibe. I find this happens no matter where I store it though, and I just rinse it off before each use regardless.

There's also a little instruction booklet that tells you a bit about the controls and how to take care of your new Concerto.

I really wanted to love the Concerto. It has a beautiful shape and beautiful design. I got the black color and it really is a lovely looking vibe. I had hoped we'd be good friends, but I find the rigid and contoured shaft just a bit too much for me on most occasions. I have to really be in the mood for the Concerto in order to enjoy it. I'm glad to have it in my collection because there are the times that I want that deep and filling sensation and the Concerto is always there to provide that for me.

The Concerto has also proven to be best used for couple time as it's easier for my husband to maneuver it on me without discomfort than it is for me to do it on my own. It's just the angle of how it's held, since there's no give. Solo, I have found the best use for the Concerto is more of a clitoral vibe with some shallow insertion play. The shape of the Concerto does feel nice on the clitoris and labia and the vibrations carry well.