Even though the original purpose for this product is pretty obvious, I bought it for another reason. After seeing a suggestion in another review video I decided to get one of the Tenga eggs to use inside out as a sleeve to go over the end of my Hitachi. I did however get a little experience with a very lucky "guinea pig" for how the egg performed as a sleeve masturbator as well.

When I unwrapped the egg I noticed how soft and silky the silicone felt. In fact I found that I couldn't keep my hands off of it and kept touching it and stroking the ridges of the egg (I ordered the "Wavy" version) even after I put it on my Hitachi because it felt so silky soft. As a Hitachi "aid" it performed well enough. I didn't really feel the ridges as much when using it but loved the soft texture it added to the Hitachi without dulling any of the vibrations coming through. Also, since the egg fit over the whole head of the Hitachi, I felt a little safer using it since I'm a "squirter" and always wonder if I'll get parts of the Hitachi wet during use and cause it to break. I guess in this sense a condom would have worked just as well, but the added silky texture of the egg was a definite plus.

For use as a masturbator, my "guinea pig" was surprised at how good it felt during use. I was amazed at how stretchy the egg was but was a bit worried at how thin it stretched when pulled down during masturbation. Sure enough my fears were warranted and after about 10 minutes or so of use (after stopping for a minute to add a bit more of the included lube) the toy ripped at the tip. Thankfully my test subject was not injured by this ripping (like I read in another review) but was just slightly disappointed. I'm not sure if the ripping was from the membrane of the egg being stretched too thin, it was too roughly used (but on the other hand we weren't very rough with the toy at all), or if my earlier escapades as using it as a Hitachi cover somehow weakened the toy.

In any case, I had a great time with the Tenga egg for both of my "experiments". I will definitely be ordering more with lots of different patterns to use for my own Hitachi fun. If my "guinea pig" is lucky, I may toss him a few, too. My only gripe about this product is that I wish it wasn't "single use only" and was something that could be used multiple times. I assume making the silicone tougher would also mean making it less soft, with is part of the appeal. Either way, the Tenga egg is a lot of fun whether you're ordering it for yourself or to use with a partner. They have made me into a happy repeat customer!