I think this is the perfect stimulation for those with sensitive nipples. It's great as a teaser with the combination of suction and vibration. Those more advanced in the area of nipple stimulation may not enjoy this as much unless they are sensitive to it. Women will likely benefit more from it than a man would. It can apply suction to the balls as well, for those who enjoy that form of play.

The outer material is smooth, as is the interior of the bulb. The little cone is covered with bumps to caress your skin, although this isn't as noticeable as you might like. It isn't really a stretchy-type of toy, though the suction is fairly good for the size.

Overall the shape might look somewhat weird while it's being worn. The bulb itself tends to have a fairly decent amount of suction to keep it in place, and it seems to work better the more that sticks up inside it. Larger nipples will get more from this than the smaller ones. Putting it on is as easy as sticking it in place and squeezing the bulb. The vibration comes from a little pack on the exterior of the toy. One thing I noticed is that it doesn't have a push button to turn it on or off. Inside you have to find the little slide button on one end of the vibration pack.

For my part, the vibration could have been worked in better. Maybe have the pack more on the interior of the bulb, to touch directly on your nipple. As it stands on the side of the toy, most of the vibrational energy is just wasted into the air. While you can apply this to the penis, caution should be used if you elect to use it on the tip or head of your cock. Leaving it in place too long can induce soreness or possibly a blood blister to form.