Disclaimer: I purchased this for my husband, so the following is his review.

The first impression is that the opening is a bit small, but thankfully the "wings" are flexible, so as long as you aren't as girthy as a soda can, you should be okay. The toy claims to be waterproof, but given the type of charge port (DC charger with a flap), I won't be testing that theory. Messing around with the toy, the controls are straightforward. One button turns the toy on and off (press and hold for 2 seconds) and cycles through the patterns and the 2 buttons on the other side control the intensity of the vibration. Turning it on, and the lowest setting is already very high and buzzy. Putting your finger on the circle that pulses makes it go into mach-speed to the point where it just looks like a blur.

Actually, using it surprisingly gives you multiple sensations depending on how you use it. There's a stark difference between using lube (be sure to only use water-based) and using it dry. The dry obviously gives you more friction and gives you more of that dragging feeling, but not in a bad kind of way. You honestly don't even notice much of a "pull" with the vibration. I found that I do prefer using lube with it as I can stroke faster with that extra glide. I do also really enjoy that you can start out using the toy completely flaccid. I don't particularly need to, but having the option just in case is great.

The toy is easy to clean since there's nothing to take apart, and the only moving part is very shallow and doesn't create any hidden space that is hard to access. It also came with a storage pouch, so it's good to go for easy storage and travel.