I'm not sold on this pump, maybe I'm not doing it right- or maybe- this one was defective. I have had several pumps in my life, this one was okay. The construction is solid, the base wasn't uncomfortable, the pump was easy to install, and the pressure relief valve functioned as promised. So, why the 3 star review? Well, a couple of things went wrong. My biggest issue with this was the fact that the pump leaks air, slowly, but surely. With that being said, I tried to adjust the seating, refit all the valves and parts, and ensure I had a seal with my body- all things checked out. So that leads me to believe that either I had a defective unit, or- the least likely situation- the pump isn't well made. That being said, I scoured the internet to find any corroborating evidence to the latter- and the internet has exclaimed that this was an isolated incident. The other reason for a 3 star review is because, it's just a pump, there really isn't anything that makes it stand out from the rest. The price is good, so- if you're shopping for a first pump this is going to be the one. On a side note, it does come with a cock ring, which works really well- the tabs on the side make it easy to put on and take off. As with all pumps, BE CAREFUL, you can over pump, pump too long, or rupture blood vessels- take a crawl, walk, run approach- or you run a huge risk to your treasured appendage!!!