The Vibrating Crazy 8 is a double cock ring with a vibrating bullet in the center. It has highly stretchable rings to allow for comfortable fit on a variety of body part sizes. This cock ring can be used for both couple and solo play to provide vibrating stimulation to prolong an erection. Anyone, regardless of experience with toys, should be able to use and enjoy this product.

The Vibrating Crazy 8 is made of TPR which is extremely flexible and more body safe than rubber type cock rings but not quite as safe as silicone. There is a lot of drag when this is rubbed against skin, so you may want to use a water-based lubricant to help with comfort during use or application. There are small nubs on the portion of the ring that hold the bullet with a larger nub in the center. The rings have smaller nubs on one side of them and 3 large rings on the inside where it would rest against the cock or balls. Other than those nubs, the material is smooth.

As the name implies, this cock ring is shaped like an 8. The two rings differ in size with one being about half the size of the other. Both rings stretch to about the same size but the bigger one has a firmer, tighter fit. This allows for the user to have two options in intensity. Both sides do provide enough pressure to function as a cock ring should, but the larger size is a little less stretchy. To put this on using both rings, just slide one ring down (probably the bigger of the two) your cock with the bullet pack on the top or stomach side of the cock then slide the smaller ring over the the cock. The bullet back will be on top with the nubs facing out so that your partner can rub against them for stimulation. The stretchy TPR makes this comfortable, though the drag may cause some awkwardness when trying to get it into position. If you don't like the feel of it sliding down your body, add a little water-based lube.

The bullet itself is made of hard plastic. It is completely removable and easy to put back in. It takes 2 watch batteries which are included (though I was able to get it to run with just one with less intensity) along with 2 extra watch batteries.

To turn the Vibrating Crazy 8, you just push the button on the end of the bullet after putting the batteries in. The bullet has several vibration settings that it goes through randomly. The vibration settings include a steady vibration, a slow pulsing, a fast pulsing, and a low to high kind of wave vibration. Then intensity ranges from mild to medium. To turn the bullet off, just press the button again.

The TPR cannot be boiled for cleaning, but you can safely wash it with warm water and anti-bacterial soap. The hard plastic bullet can be cleaned that way as well. According to the material safety guidelines, you can use both water-based and silicone-based lubricants with this material.