Warning! Base NOT wide! Potentially dangerous..
This product does not have a wide enough base to stop it from slipping inside. I would NOT recommend this to anyone, even first timers (being a novice myself). It is actually quite dangerous, and very nearly resulted in an embarrassing trip to the ER. Further, the vibration was pretty uninspired and was very difficult to switch on and off. Honestly, I know the price is attractive, but go for a more expensive one with a decent base on it (one that is not flexible and is larger than the circumference of the plug itself).