The Wish-bone is made from hard ABS plastic, with a smooth glossy texture. ABS is a nonreactive, safe material (used for many children's toys) which conducts vibrations very well, although it also tends to make for a noisy vibrator. The smooth texture is good for sliding it around and rubbing it against sensitive areas.
The Wish-bone's basic design is a very good idea. It makes it pretty easy to hold while pressing it against yourself. The size of the toy is good for its intended use. It's about four and a half inches long, and just under an inch in diameter. That's just the right size to be able to stimulate your entire vulva at once, but it's short enough that you can aim it just at your clitoris without having your hand at an awkward angle.
My only concern is with the handle which makes this vibrator unique. The U-shaped bit where you put a finger to hold it is too big to grip your finger well enough, and the hard plastic can dig into your fingers. Also, it seems like it should be mounted at a slightly different angle in order to be more comfortable. The toy designers should should rethink the size and angle of the handle to come up with a better design in future models.
This is one powerful vibrator. For some people it may even be too strong. There are three settings, but there is not much of a difference between the three. Even the lowest was stronger than my girlfriend likes. Switching between the three levels is easy; pressing the single button switches between levels. The button is pretty well positioned so you can press it with the same finger which is holding the toy in place.
The vibrating emanates from the center of the bulbous shaft, but the hard ABS plastic transmits the vibrations well enough that it's hard to tell exactly where the vibrating motor is located. Every part of this toy vibrates intensely. This strong vibration, combined with the plastic case makes it a rather loud toy, like most hard plastic vibrators. It can also numb your fingers and make it more difficult to hold. I would have liked to see a softer handle, to make it more comfortable for your fingers as well as to dampen somewhat the vibrations which reach your fingers.
The Wish-bone is waterproof, and seems to have a pretty good O-ring to keep moisture out of the battery compartment. I'd trust it in the bathtub.
ABS plastic is very easy to clean, and this toy is even easier to clean than many due to a good waterproof battery compartment. As long as the battery compartment is closed properly, it's no problem to wash the Wish-bone with soap and water in the sink. You could also wipe it down with alcohol, if you wanted.
ABS is compatible with both water-based and silicone-based lubes, so you should be able to use your favorite lubricant with the Wish-bone.
I was pleasantly surprised by the Wish-bone's packaging. It comes in friendly, non-threatening packaging which is completely inoffensive (as long as you don't object to an overload of pink). No photos of porn stars, no vulgar text. The toy is targeted at women, and their package is designed appropriately. I'd be very comfortable giving it as a gift.
The package had simple instructions in several languages, clearly pointing out the battery requirements, materials, and the fact that it's waterproof. There was also a simple diagram showing how to hold it. No complicated instruction manual, but the toy is simple enough not to need one.
Oh, and the best part? The two required size N batteries are in the box (and prominently displayed, so you can see that they're in there.) While N is a somewhat uncommon battery size, it's not too hard to find. Any store with a large battery selection should have them. They're traditionally used in cameras, garage door openers, and so on, but lately they're being used in an increasing number of sex toys.
My girlfriend and I tried this toy out together, and while we liked the idea behind the design, she found the vibrations a bit too strong. She also found it a bit uncomfortable to hold for more than a few minutes, due to the vibrations; and due to the fact that it seems to be designed by someone with bigger fingers. I tried using it on her, and found that this toy is really meant to be used for solo play. It's hard to hold up against someone else, as it's designed specifically to hold against your own genitals. We also tried using it during intercourse, but it isn't especially good for that, either.
I think someone who likes strong vibrations could find this toy great for masturbation, and while it's not my girlfriend's first choice in toys, I think a lot of other women will like it quite a bit. I think this will become my vibrator, not hers, as my larger fingers can hold it better, and I like the strong vibrations more than she does.