This is the best pump I have used to date. But there is a problem with it. I will explain in a minute.
But it is definitely a highly recommended item. I just bought my second.
I use the toy in combination with a masturbatory sleeve (search Amazon: Doc Johnson The Tube UR3 Masturbator). Stick most of it in the tube and fold 2" of it over the end of the opening of the toy (glory hole). Now you have a smooth, soft sleeve that will grip the entire length of your ***** that you insert into the toy, not just the small portion of the ***** the toy comes with. throw that away.
Combined with the suction you get what feels like a glorious *******. In fact, it has changed the way I have *** entirely.
I use it for outright start-to-finish ************ (almost daily). but I also have it for initial pumping up of my ***** prior to having *** with my wife - as well as a coupe times when switching positions in order to get it fatter ans stiffer.
My ***** is easily 25% fatter and a half inch longer (at least).
Add some light lube to the sleeve, or saliva (less messy) and with a controlled suction, you can ********** yourself to many mind blowing *******.
The PROBLEM is, I use it every day. It is THAT good. I burned through my first one in less than 90 days.
Note: Once suction is to the desired level, turn off the pump to save the motor from being overworked. It should last 6 months or more that way. Longer if you are not a *** addict like I am.
If you get this, go to Amazon and buy that sleeve, you will love it!