It isn't the greatest, but it does what I want.
I have a VERY large tub that does not have jets. I have always wanted a bit of movement to my bath. This give me what I wanted, a good bubbling, but not tearing my flesh to bits like jets. My only downsides are that it can't force the air all the way down to the pad unless its on medium. (again a VERY deep tub) I also wish the air coming out of it was warm, you can feel the cold air bubbles while in a hot bath. But other than that it sticks well, and isn't bad to sit on.
Rating: 3 stars