This toy is absolutely ridiculous, and a waste of time. There are so few vibrators or dildos that would actually fit in the opening of this "enhancer". I can barely fit my index finger beyond the first knuckle. No vibrator we own is thin enough to fit in the hole. If that hole was wider, this could be a fun toy enhancer, but not this small.

It is supposed to be used as a halter in any toy, providing a stop and pleasurable rubbing when a toy is inserted either vaginally or anally. The size of the enhancer would make it hit both the clitoris and perennial areas. The enhancer should not need any special lube other than what the vibrator or dildo attached is given. Cleaning, however, is quite simple, just hot water and soap will do the trick.

I really don't recommend this one in that size. It really does not fit any toy that people really use. It really isn't worth it in this size; buy a bigger one and I'm almost certain it will be great, but not this small. The rubber would probably feel great with use on a properly sized vibrator or dildo. I cannot stress this enough, the size of this particular one makes it almost impossible to use with any positive effect. If you want to torture yourself or your partner, then I suppose this could work for those sadistic purposes, but no woman will get any pleasure from a dildo minuscule enough to work in this enhancer, nor do I personally think that a vibrator small enough to fit will have enough power to bring about any orgasm.
My opinion and this entire review come with a terrible bias of impracticality and unrealistic expectations of how thin a vibrator should be.